Would having an embolization help stop endometriosis-related pain?

No: I assume you mean a uterine artery embolization. This procedure was designed to stop the blood flow to the uterus in order to shrink fibroids. It doesn't do anything to endometriosis, which is mostly outside the uterus and on the pelvic peritoneum. Endo gets its blood supply from the tissue under it, not from the uterine vessels. Endo needs to be removed to get the best pain relief.

Not likely !: Embolization of pelvic vessels work best for uterine hemorrhages and to shrink uterine fibroids by blocking its blood flow . Pelvic pain with endometriosis is best treated by surgical resection of the disease. With advances in robotic assisted laparoscopy, it can often be removed without the need of a hysterectomy.