You’re doubled over in pain during your period, bleeding through everything, and your doctor says it’s normal. Or maybe sex hurts so much you’ve started avoiding it, but nobody seems to think that’s a big deal. You Google your symptoms and come up with two possibilities – endometriosis or fibroids. Okay, but now what?
Around 190 million women have endometriosis. That’s one in ten women who menstruate. Fibroids are even more common, about 70-80% of women will have them by age 50. But it takes most women 8-10 years to get an endometriosis diagnosis. An entire decade of being told you’re fine when you know something’s wrong.
Both conditions cause similar symptoms, which is why doctors mix them up all the time. But they’re completely different problems that need different treatments. Getting the wrong diagnosis means wasting time on treatments that won’t help.
Endometriosis vs Fibroids: What Makes Them Different?
Fibroids are growths. Benign tumors made of muscle tissue that form in your uterus. They can be tiny or massive, some women have fibroids the size of grapefruits. They just sit there growing, sometimes causing problems, sometimes not. They don’t spread beyond the uterus.
Endometriosis is different. The tissue similar to the lining of your uterus starts growing outside of it, on your ovaries, fallopian tubes, bladder, intestines, wherever it wants. This tissue, every month when you get your period, bleeds. Except there’s nowhere for that blood to go. It gets trapped, causes inflammation, and creates scar tissue. Over time, your organs can literally stick together.
With fibroids, you’ve got these solid lumps taking up space. With endometriosis, you’ve got tissue bleeding internally every month.
The frustrating part is that both mess with your hormones in similar ways. Estrogen makes both conditions worse, which is why symptoms often improve after menopause.
| Feature | Endometriosis | Fibroids |
|---|---|---|
| Type | Tissue growing outside uterus | Growths inside uterus |
| Texture | Soft, bleeding tissue | Solid muscle tumors |
| Spread | Can affect multiple organs | Stays in uterus |
| Key Symptom | Inflammatory pain | Pressure & heavy bleeding |
Endometriosis vs Fibroids Symptoms
Both make your periods hell. Heavy bleeding, bad cramps, pain during sex, trouble getting pregnant. This overlap is exactly why so many women spend years being misdiagnosed.
But there are differences if you know what to look for. Fibroids cause pressure. Like you’re carrying around extra weight in your pelvis. Women describe feeling full or bloated. If a fibroid pushes on your bladder, you’re peeing constantly. Push on your bowels, you’re constipated. The bleeding with fibroids can be ridiculous, soaking through a super tampon in an hour, clots the size of golf balls, periods lasting two or three weeks.
Endometriosis pain is sharper. It starts before your period even begins, which is unusual. And sometimes it hurts for years, no matter when you have a period. Normal period cramps wait until you’re actually bleeding. With endometriosis, you might start hurting days earlier, later, during or without correlation to your period. The pain can be stabbing, burning, or this deep ache that radiates into your back and legs. Since it can travel around your body, you can feel chest pain, headaches, nausea and more.
Pay attention to bathroom issues during your period. Painful bowel movements? That’s classic endometriosis, especially if tissue has attached to your intestines. Pain when you pee during your period? Same thing, tissue on your bladder. Fibroids don’t usually cause that kind of cyclical digestive or urinary pain.
Sex is painful with both. Endometriosis causes deep pain during penetration. Fibroids might cause more external pressure or discomfort depending where they’re located.
The exhaustion with endometriosis is different too. It’s not just being tired. It’s the kind of fatigue where getting through a workday feels impossible. Your body is constantly dealing with inflammation and pain, and it wears you down.
| Endometriosis | Fibroids | |
|---|---|---|
| Type of Pain | Sharp, burning, radiating | Dull, heavy, pressure-like |
| Bleeding | Normal or heavy | Often extremely heavy, long periods |
| Pain Timing | Before, during, and even outside of periods | Mostly during periods |
| Affected Organs | Ovaries, bladder, intestines, diaphragm | Uterus (may press on nearby organs) |
Why Diagnosis Takes Forever
Both start the same way. You describe symptoms, and the doctor does a pelvic exam. Sometimes they can feel fibroids during the exam. They’re solid masses, easier to detect. Endometriosis lesions are flat against organs, so they’re impossible to feel through your abdomen.
Ultrasounds spot fibroids easily. The tech can see them right there on the screen, measure them, count them. Easy. For endometriosis, ultrasounds only catch the big things such as large cysts on the ovaries. All those little patches of tissue scattered around your pelvis are invisible on ultrasound.
Surgery is the only way to definitively diagnose it. Laparoscopy, where they put a camera inside you and look around.Doctors don’t jump straight to surgery, which makes sense, but it means women wait years trying other things first while their symptoms get worse.
No blood test exists for either condition. Doctors might check if you’re anemic from heavy bleeding, but that’s about it. Aldough, they are trying to develop a blood test that shows the presence of endometriosis.
Some Women are More Likely to Develop These
Family history matters for both. If your mom had fibroids, your risk triples. Same with endometriosis as it runs in families. But genetics aren’t everything.
Estrogen is the real culprit. Both conditions feed on it. That’s why symptoms often disappear after menopause when estrogen drops. Most treatments try to lower estrogen or block it. An interesting thing to consider though is that endometriosis can create its own storage of estrogen.
Something people don’t really think about is that having one increases your chances of having the other. About a quarter of women with endometriosis also have fibroids. One in five women with fibroids has endometriosis. Doctors aren’t sure why yet.
Age matters for these conditions as well. Endometriosis usually shows up in your teens or twenties. Fibroids are more common in your thirties and forties. But neither condition cares about age ranges, you can develop either at any point.
Getting Pregnant Becomes Complicated
Both make conception harder. Thirty to fifty percent of women with endometriosis struggle with infertility. The inflammation damages eggs, scar tissue blocks tubes, and the whole inflammatory environment makes implantation difficult.
Fibroids block things physically. One growing into your uterine cavity prevents embryos from implanting. Big ones block fallopian tubes. The inflammation they cause doesn’t help either.
But lots of women with these conditions do get pregnant. It’s not a death sentence for your fertility. Surgery sometimes helps, removing fibroids or cutting out endometriosis tissue. Fertility treatments work around some problems too.
Pregnancy with either condition comes with risks though. Fibroids might grow during pregnancy because of high estrogen, causing pain or preterm labor. Large fibroids often mean you need a C-section.
Endometriosis increases miscarriage and preeclampsia risk. Though pregnancy sometimes gives temporary relief from endometriosis symptoms because of sustained progesterone.
What Actually Helps
Neither has a cure. Treatments manage symptoms, hopefully well enough that you can live your life. Most women start with ibuprofen (which in most cases doesn’t help) and hormonal birth control.
Hormones work differently for each condition. With endometriosis, the goal is stopping or reducing periods so tissue stops bleeding every month. Birth control pills, progestin IUDs, shots that temporarily shut down your ovaries (hello hot flashes and mood swings), or medications that suppress estrogen production.
For fibroids, hormones aim to shrink them. But it’s usually temporary, when you stop the medication, fibroids grow back. Understanding your specific symptoms helps figure out which approach might work.
Surgery is the next step when medication fails. For endometriosis, surgeons cut out or burn lesions while keeping your uterus and ovaries. If nothing else works and you’re done having kids, hysterectomy is an option. Hysterectomy includes removing the uterus, sometimes the ovaries too.
Fibroid surgery includes myomectomy (removing individual fibroids), hysterectomy, uterine artery embolization (blocking blood to fibroids so they shrink), or newer options like focused ultrasound that destroys fibroid tissue without cutting you open.
Living with Constant Pain Changes Everything
Statistics don’t capture what daily life looks like. Calling out of work because you can’t move. Canceling plans because you never know when symptoms will hit. Avoiding intimacy because you know it’ll hurt. Trying to explain to people why you can’t commit to things when you look fine on the outside.
Over half of women with endometriosis feel depressed or hopeless. Makes sense when you’re in constant pain, doctors dismiss you for years, and your entire life revolves around managing symptoms. The mental toll matches or exceeds the physical one.
Relationships suffer. Pain during sex affects intimacy. Unpredictable symptoms make it hard to be reliable. Fertility concerns add stress if you want kids. People who haven’t experienced it don’t understand why you can’t just push through.
Money becomes an issue too. Medical bills pile up from all the appointments and tests. Missing work means lost income. Some women can’t advance in their careers because they can’t work at full capacity. In the UK, endometriosis costs over £8 billion annually in lost productivity and healthcare expenses.
When to Stop Waiting and Get Help
If your periods are destroying your life, don’t wait around hoping it gets better. Soaking through pads in an hour, pain that OTC medications don’t touch, unexplained fertility problems, missing work or school regularly – these aren’t things you should just accept.
Track everything. Write down when pain happens, how bad it is, what your periods look like, all the symptoms. Doctors need to see patterns. Plus it helps when you’re trying to explain what’s happening and you’re so used to the pain you forget half of it.
Don’t let doctors dismiss you. Too many women are told their pain is normal or they’re being dramatic. If someone brushes you off, find a different doctor. Ask specifically about endometriosis and fibroids. Request specialist referrals. Get second opinions. Trust yourself, you know when something’s wrong.
Stop suffering alone
Dealing with chronic pelvic pain while trying to get doctors to take you seriously is exhausting. You shouldn’t have to figure this out by yourself. Finding providers who actually listen takes energy most women with these conditions don’t have.
Endometriosis Sisters exists because we’ve been there. We know what it’s like to be dismissed, to wait years for diagnosis, to have your life controlled by pain. Our community supports women through every part of the endometriosis journey, from figuring out what’s wrong, through diagnosis, treatment decisions, and everything after. We share real experiences, provide actual resources, and create space where people believe you when you say you’re suffering.
Years of pain isn’t normal, no matter what anyone tells you. Connect with women who understand what you’re going through.
