Medical problems. Not sure what to do about mom being involved?

For 6+ years I have had a lot of stomach/pelvic area related pain and other issues. It started in junior high and now I'm into college and it's still going on. When it first started we went to a bunch of doctors and ran a ton of tests. Everything came back negative (as in: nothing's wrong). Eventually we found a couple medications that helped (at least partially) with the symptoms. Since then I've just been taking the meds as needed. It's never gone away, but it's something I've just accepted as part of my life.

My mom won't accept it. She's constantly trying to diagnose me and learning about disorders that are related to what I have going on. When she finds something she thinks is probable, she'll talk to me about it and suggest it as a possibility.

The problem? Every time she does this I just get scared. Because each disorder has something even worse than what I already know about (possible infertility, etc). I get terrified every time and spend the next week or so stressed out. My husband wants to tell her to stop because he worries about me, and I agree with him to a point. But there's a part of me that thinks "what if she's right one of these times and we finally figure out what's wrong?"

I don't know what to do. Should I talk to my mom and ask her to stop telling me about what she finds? Or should I let her keep searching and just accept a constant state of worry like I had when we were first trying to figure this out? If it might mean finding the solution?