<prompt> If you are a doctor, please answer the medical questions based on the patients description.i just went to the hospital last night for massive abdominal pain and liverintestine pain. i took a 5 week steroid cycle and once i finished i started my post cycle of tomoxifen citrate, the problems started to happen when i started taking the tomoxifen, the hospital took an ultrasound and said i might have gallstones, and said it was from the TomoxifenNolvadex i had been taking most likely. so they asked me to stop. the only issue is that due to not being able to finish the post cycle of tomoxifen to keep my estrogen levels low, i know for a fact i will be getting a massive rebound effect that could have serious side effects. what can i do? please!  <response>: Hi. Thanks for your query. Read and understood the problems. You have been taking Tamoxifen and a 5 week-course of steroids, and you developed massive, severe pain in the abdomen and the liver area. I would suggest you the following:Since Tamoxifen is so important that you have to continue it.-Get an upper GI Endoscopy done to see whether this is due to Gastritis or so?-Star a PPI, antacid and continue.-soft bland diet.-An opinion of a Gastroenterologist if required. I hope this should solve your problem as you do not have any positive finding on ultrasonography. And then you may certainly continue your treatment with Tamoxifen. 