Hi there Luckibird. I'm sorry it's pain that brought you to these forums, but I hope you get answers and support while you're here.
It's possible the pain you're feeling could be from trigger points inside the pelvic area. These are areas of knotted up muscle that can get super tight and hard to the point that the muscle is in constant spasm and only releasing the trigger will help the pain go away. The problem is that releasing the trigger is easier said than done.
If you're not already seeing a Pain Specialist, you should request a consult. They tend to take a different approach than just a gyno would, so you might get more answers. Pelvic physiotherapy might be helpful, as well as injections to release the triggers. Botox is often used in these cases, and while it's expensive, when it works, it works really well.
When you have this pain, have you tried using either ice or heat? I love heat for my pain - I find it much more soothing. Magic bags are wonderful for pain relief!
I hope you'll be able to find a doctor who can "think outside the box" and come up with some ideas on what might help you. Good luck to you.
DX: Fibromyalgia, Severe Myofascial Pain, Chronic Pelvic Pain, Surgical Adhesions, IBS, IC-PBS, Carpal Tunnel (both wrists), FAI, Type 2 Diabetes, Reynauds, Visual Migraines, Drug Related Hot Flashes, Hard Start for IV's, Unable to vomit due to surgery.
Meds: Oxycontin, Tramadol, Tramacet, Cymbalta, Cesamet, Flexeril + Vitamin D + Multi daily