I am 26. A vegetarian. I am in pretty good shape.
I have had several bouts of the above over the last year. Doctors have no clue. Each bout it always the same....following the same regular pattern.
I wake up early in the morning (4-5am) with abdominal pain. I am very gassy...with bad tasting burps (this is the real signal that I am in for it). Then I have diarrhea. All the while have bad tasting burps and stomach pain. After maybe 15min on the toilet....the pain and gas subsides and I return to bed....where I can snooze for maybe 30mins before the whole thing starts again.
This thing the repeats for the next 3-7 hours...until my insides are totally purged. Towards the end the diarrhea is just water. At the very end I vomit whatever is left in my stomach. Then its over. I go back to bed and sleep....wake up like it never happened.
This has happen now 6-8 times in the last year. The last few times I have forced my self to vomit. I found that this speeds up the process....ending it in 2-4 hours. There doesnt seem to be any common foods involved....its not like it always happens after I have eaten food "X". Other people have had the exact same meals as me and they are fine.
I have had blood tests and stool test (all done maybe 2-7 days after the the episode) and have come up with nothing.
Any ideas? Please help.