Heavy, painful periods and an enlarged uterus can point to fibroids, adenomyosis — or both. They’re different conditions, they can look similar on a symptom list, and which one you have shapes the questions worth asking your doctor, especially while trying to conceive.
This is a plain-language comparison to help you prepare for an appointment. It is not a diagnosis. For fibroid location and size, see our types of fibroids guide.
1. What each one is
| Fibroids | Adenomyosis | |
|---|---|---|
| What it is | Non-cancerous growths of muscle and connective tissue in or on the uterus | Tissue similar to the uterine lining growing into the uterine muscle wall |
| Typical pattern | Distinct lumps; number, size and location vary | Often a diffusely enlarged, sometimes tender uterus |
| Common symptoms | Heavy periods, pelvic pressure, bloating, frequent urination | Heavy and painful periods, cramping, pelvic pain |
Both are common, and they can occur together. Symptoms overlap, so you can’t tell them apart by how you feel alone.
2. How doctors tell them apart
A transvaginal ultrasound is usually the first step, and an MRI is sometimes used when the picture is unclear or surgery is being considered. Ask your doctor which findings point to which condition, and bring the written report to follow-up visits.
3. Why it matters when you’re trying to conceive
Depending on type, size and location, either condition may be discussed in fertility planning. Your OB-GYN or reproductive endocrinologist is the right person to say how it applies to you and what to monitor. Related reading: fibroids and fertility and endometriosis and fertility, since adenomyosis and endometriosis are sometimes discussed together.
4. Where AGO formulas fit (alongside your doctor)
AGO formulas are designed to support overall uterine and cycle wellness while you follow your doctor’s plan. They are not a treatment for fibroids or adenomyosis.
| Your situation | Often considered |
|---|---|
| Fibroids, trying to conceive | AGO Tumor + AGO Mom |
| Adenomyosis, trying to conceive | See our adenomyosis combo guide |
| Heavy, painful periods | Eva Herblux (see a doctor about heavy bleeding) |
| Cycle and uterine wellness focus | Mau Nguyet Da |
5. Questions to bring to your appointment
- Do my ultrasound or MRI findings suggest fibroids, adenomyosis, or both?
- How might this affect my TTC timeline?
- What symptoms mean I should call sooner?
- Is it safe to add a supplement alongside my current medication?
- When should we re-image?
Seek care promptly for very heavy bleeding, dizziness or severe pain. No supplement guarantees pregnancy or changes the size of fibroids. See also fibroids and heavy bleeding. Get a free personalized plan.
FAQ
Is adenomyosis the same as fibroids?
No. Fibroids are distinct growths of muscle tissue; adenomyosis is lining-like tissue growing into the uterine wall. They can occur together and share symptoms.
Can I have both fibroids and adenomyosis?
Yes. Imaging such as ultrasound or MRI helps your doctor see what is present.
Can adenomyosis or fibroids affect getting pregnant?
They may be part of fertility planning depending on type, size and location. Your doctor can explain how they apply to you.
Can supplements treat fibroids or adenomyosis?
No. AGO formulas are designed to support overall wellness alongside medical care, not to treat either condition.
Which AGO product should I ask about?
It depends on your situation. The care team can suggest a combo to review with your doctor.
Do you ship to the US and Canada?
Yes. AGO ships to the US and Canada; the care team can confirm delivery times for your area.