Stomach Ulcers

Hi there, wondering if I can get some advice. Okay roughly 12 months ago I was getting black stools, it was discovered I had a duodenal ulcer. I was given a course of anti-biotics to resolve it. But just recently ive been having a few problems with regards to stomach acid, gastric reflux to be precise. Which seems to occur at night, on another note, one night last week I woke up with a severe fever. I started to sweat and burn up had dizziness and also trembling all over. So much so that I poured a glass of water the trembling was so severe that it went all over the place. I had a few beers previously at a friends house, 3 too be exact. Just wondering if that could have exacerbated the problem, and any suggestions on why I had the fever in the first place. I am also taking citalopram antidepressants at the moment, which im cutting down by 5mg a week in order to come of them now that I am feeling better, all suggestions appreciated.

Chris