Hi all. I was diagnosed with a 4cm complex ovarian cyst on my right ovary in June after trying to find the cause of my severe lower back pain. Doctor was fairly sure it was a dermoid cyst but wanted to wait and see if it resolved on its own. When I asked if it could be anything else, she was empathic that it's not cancer because of my age (late 20s). However, because I was still nervous she did give me the CA 125 blood test which she told me came back normal. I was put on birth control pills for one month, and I just went back for a recheck. The right cyst resolved, and apparently there was free fluid around the ovary indicating a recent rupture, however, I now have a similarly sized cyst on my left ovary. My doctor now thinks I have endometriosis. She also revealed my CA-125 had been 31, which is a borderline result (not quite as normal as she assured me).
Other than the back and pelvic pain I've been experiencing the past few months, I've never had any other symptoms of endo. My periods have been light and short, not especially painful. No irregular bleeding EXCEPT the past few weeks which I think could possibly be a result the rupturing cyst or having taken birth control pills for only one month. I conceived two children with no trouble. So I'm skeptical of the endometriosis diagnosis. I have been placed back on birth control to recheck via ultrasound in 4-6 months.
Does this seem like a responsible course of action? I do have some health anxiety so it's hard not to think worst case scenario, but given the almost elevated CA125 and the lack of endometriosis symptoms, I'm feeling very uneasy. I'm not sure whether I should just let it go or if I should seek a second opinion.