Thank you for the comments. I had another vaginal ultrasound and this time they were able to see the right ovary and everything looked good--the complex cyst was gone.
The doctor believes endometriosis is causing the pain on my right side and back. She put me back on Yaz (birth control). I was on Yaz for several years to control the severe PMS symptoms I was having. I got off PMS last summer when I turned 50 because I wanted to get an accurate reading of my hormone levels which are normal. It seems like once I got of Yaz I started having these problems--complex cyst, pain,
etc. I've heard some horror stories about Yaz--women having strokes but my doctor assured me it was safe to take.
If this doesn't work then the doctor is recommending a laparoscopy and perhaps removing the endo and maybe ovary---depends on what they see.
Did you have your follow up u/s? What was the result and what treatment if any will you need?
My Dr. sent me for an MRI since they couldnt see my left ovary from the vaginal ultrasound. They saw a 2.5 on right side on ultriasound, when they did the MRI they found a 5.0 they were both complex.
I had pain on both my left and right side as well as my back. Since I just had them both removed my back pain has deminished.