I have been experiencing for about 2 weeks now going to bed with belly ache, or waking up in the night with it. I have been taking Rennie which has helped a bit. This can go on for hours and the only way to fully recover is to sleep. I wake up fine but within a few hours I start to get this ache again. It doesn't hurt as such more like a discomfort. Well this morning has been the worst to the point where I feel sickly(at one point thought I was going to be sick) now I feel light headed. I have booked to see my GP on Thursday but was wondering is anyone might of experienced this?