Have all your female organs checked out, by MRI or some other scan. Don't let them stop at blood tests. I remember those symptoms, had 'em for years. Doctors think female complaints are vague, but cervical cancer, for example, is often caught when a woman keeps complaining that she doesn't feel "right", and keeps insisting until she has the whole battery of tests. Even if nothing is malignant, those symptoms are serious enough that they need to be addressed!
It turned out I had ovarian cysts and uterine fibroids, but I just had them pull the whole works, as I was already 50. At your age, if you want to maintain your childbearing capacity, it's even more important to catch things early -- maybe they can just remove the problematic ovary.