I Had Gastric Bypass In Nov 2014 Since Christmas 2014

I had gastric bypass in nov 2014 since Christmas 2014 I have been throwing up dr has done enderscope removed the candiecane limb ended up with a feeding tube since 01 2015 now I still throw up dr wants me to keep trying to drink now ever three or 4 days I am throwing up and there is blood in it dr says its a ulcer but I have been on Carafate since surgery now my stool is also black what should I request my email is YYYY@YYYY please just need to figure this out