egg burps, vomitting

[bambigirl84]

I am 31 years old and within the last 2-3 years have been having the exact same symptoms every 3-4 months right on time. I start to get the rotten egg smelling/sulfur burps, my stomach feels full, I feel like I'm going to puke and have diarrhea at the same time and only feel better after vomitting while I'm sitting I also feel shaky and like I'm going to pass out. Then I will vomit and go to the bathroom (diarrhea) and feel fine a few hours later and the next day like nothing happened. My doctor has tested me for Ulcers and Celiac disease and both have came back negative. She thinks it may be a food allergy of some kind so I'm suppose to keep track of everything I eat and see her on Monday. I was just wondering if anybody else has had these same symptoms and/or found out anything or what it could be? I'm just sick of this happening every 3-4 months it starts with the same thing everytime with the rotten egg burps so then I know what's coming within the next 6 hours the vomitting, diarrhea, stomach feeling like it's being twisted inside not really a pain just uncomfortable, feeling so full that I have to either go to the bathroom or vomit and not knowing which will come out of which end ( I know that gross but that's the feeling all the time!) And once in a while not all the time feeling like I'm going to pass out even while sitting down then get hot and the chills. Please Help! :(

[KFSBb]

Almost every month during my premenstrual time Ily suddenly have eggy burps which I know means vomiting & diarrhea coming soon. With diarrhea I have gas that smelly eggy too. Everything has the same smell every month. I'll have an episode & then it's done.
I have linked it to my monthly cycle. But it has skipped a few months too.
Yesterday out of the blue, burps started, about 30 minutes later I was vomiting. Got home & took zofran. But no diarrhea this time so far.
Another possible link I've noticed is coffee. I drank coffee on Sunday night. Burps started around 12pm Monday.
This isn't the first time coffee was involy. But there has been times I didn't have coffee.

It really is crazy!