I have been having stomach pain for a few years now lower stomach. I was told I had PID, my uterus and thyroids were in large and I had a cyst on both ovaries. I get BV every other week. My period are extremely off, I bleed up to 3 months at a time with blood clots the size of real live golf balls. I'm on the birth control nexplanon for 4 years now and was put on birth control pills to try to regulate my period which isn't happening.