Post gastric bypass done in 2005. Have not been feeling well lately? I feel like someone is trying to rip out of my intestines

Been trying to see Dr's and no one can seem to help me. I have now gained 14 lbs in a week and a half and in so much pain. I'm so frustrated at this point bc no one is helping me and I want to feel better before the holidays but cannot seem to be getting any answers. I've been trying to work while going through this in which has not been going well. I have had 3 endoscopy done in which came back OK but I get the run around and sent to Dr after dr. I'm so frustrated and am looking for any help

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