im having trouble like you but my symptoms are only pain,
my first doctor (who specialises in gynacology) told me it was because im fat, im 17 years old and 11st, overweight yes but not terribly. so i changed my doctor who started some tests like blood and urine and ultrasounds but found nothing so told me there was nothing wrong. i was still in a lot of pain and i knew there was something wrong and so my third doctor is doing all the tests he can just a little slow and the pain is getting worse so im planning on going to the emergancy room.
the only advice i can give is not to give up, keep pestering until they do something or go to the emergancy room because the longer you wait the worse it will get.
good luck hun.
If you are sure you can't level with your doctor and get her to order a transvaginal ulatrasound I would recommend two possibilities. First, find a new doctor. If that is impossible shwn your pain is bad head to the hospital and hopefully you will get tested there and have a starting point. We know our bodies and mustn't ignore these issues. Good luck to you. Let us know how it goes.