Re: What to expect at dr. appt.
I had some of the symptoms you explained. Swelling in my abdomen (when I don't think I've ever had that before in my life). Extended brown discharge after my period, making my period (and need for protection) longer than years past. It sounds like your periods are getting further apart. Mine were getting closer together, and lasting longer.
I had a huge fibroid (9.3cm). Otherwise, I had occasional ovarian cysts (normal).
Tell your doctor what your symptoms are, and what your concerns are. Write out your questions so you don't forget them. My doctor(s) seem to take me more serious if I have my questions written.
Other than that, I'm wondering if your doctor has performed the HPV/DNA test on you yet? My doctor did for the first time at my last pap. My doctor has started offering it to women who are 30+ years old. (I'm 44). I'm glad she did that test, because my paps have always come back good. (and then there is the rest of my story, which doesn't apply to your situation). If your doctor hasn't tested you for HPV, you might ask her if she will.
That's all I can think of for now. I hope your doctor gives you some good information!