Re: Is endo a possibility?
This really sounds more like GI tract problems, and an ulcer can make people nauseated, with vomiting intermittently. I would expect endo to cause low pelvic pain with menses, different than the usual cramping, more severe and sharp. Endo doesn't cause pain between periods unless you have lots of adhesions in pelvis from it, and it doesn't cause gas, belching and nausea/vomiting. I would see your Dr. and discuss this. You can try some antacid and OTC ranitidine (ZANTAC) or Prilosec to see if it helps in meantime. All three are helpful for ulcer related symptoms. The rectal bleeding needs checked anyway, so a trip to Dr. for both would be best.