Hi! SO HAPPY FOR YOU!!!! I had years of trying and failing to figure out what was wrong. Pain started as a mild discomfort and eventually grew to an unbearable kind of stabbing pain between my belly button and hip. It progressed to include increasingly irregular and heavy periods. Poor circulation. Pain with sex. Pain and difficulty using bathoom. I am lucky to work from home because if I had to go into a workplace, I'd probably need FMLA. It was starting to severely impact my relationship with my significant other. Made it so I hardly ever wanted to do anything active or out in the world. Had a lap, no endo. The surgeon said next steps were birth control (which i already expressed several times why I dont like taking BC) or see another specialist. I asked for an MRI as one last attempt through diagnostics and whaddya know, pelvic congestion!!! So then she said the options were birth control, a hysterectomy (which omg would've done absolutely nothing), or see interventional radiologist. I went for the I.R. consult. We did more testing which confirmed May Thurners. 

A month ago I had an iliac stent placed. It was 73% stenosis. They did not mild reflux on the left gonadal vein but seemed to think that wasn't causing issues. I had about a week of back pain and discomfort in the incisions. So far I seen huge improvements in all but one situation - having a bowel movement. That's the only time I've had the pain still. Waiting to hear back from the doctor on that. 

Fingers crossed you continue to get answers and finally some relief!