Hi ragdollyana, I had similar issues in my early 30s and had all sorts of scans and investigations and then finally a laparoscopy found some endometriosis in some 'hidden' places. My Mum had endo too which was why they suggested surgery. They lazered the cells out and the pain did go... but it is important to note that they wouldn't have found it without surgery.
They also found that my ovary was enlarged which was also a cause of some discomfort but weren't concerned. They left that and just knowing what it was, and that it wasn't an issue made it easier to cope with. Fast forward over 10 years and all is well - well, apart from the perimenopause symptoms, but that's why we're all here!
Do push for a laparoscopy and further investigation. The thing with endo is that sometimes, if it is in odd places it may only start to cause issues when it turns into adhesions and that can be years after it starts (this is what my mother had which ended up with a fully hysterectomy but only after an operation for adhesions!).
Good luck hun, push the doctors hard... you deserve to get better. xxx
