This is the first post I have ever done, so please bear with me. Over the past 4 or 5 months I've had very similar symptoms to those described above. Just to reiterate: I usually wake up with a stomach ache, then I get these very distinctive sulphuric (Hydrogen Sulfide) burps. Almost immediately afterwards I will vomit, which is soon followed by severe diarrhoea. The vomiting and diarrhoea then interchange for approx. 1 hour (from when onwards my stomach is completely empty). I usually rest for the whole day, eating plain foods, and feel back to myself the next day.
Initially I believed it just to be a horrible bout of food poisoning, and dismissed it as something dodgy I must have eaten the previous day/ night. However, from the second time onwards I began to be doubtful. Things came to a climax the day before yesterday when I woke up with the cramps and sulphuric burps followed by the vomitting and diarrhoea. Once I believed i was done I spent the day relaxing. I ate a bowl of pasta with some pesto, a small yogurt with some brown sugar and then another bowl of pasta and pesto (i.e. what i thought to be very plain food). By early evening, approximately 2 hours after eating the 2nd pasta, I began to feel nauseous and began to fear the worst! Low and behold the sulphuric burps surfaced and shortly afterwards I was back to where I was that morning. This time, however, the stomach cramps were absolutely debilitating- they didn't feel as though they were located in one part of my abdomen, but the whole of it, and spread to my back. This continued for 6 hours, during which I was rolling arond on the floor in agony. My parents decided to take me to a doctor (this is at 3am) who on seeing me said I had to go to Accident and Emergency. Just to illustrate the pain, I have very little recollection of events as I was rolling on the floor or getting violently sick! On arrival at UCL Hospital I had several blood samples taken, was hooked up on an intravenous and administered liquid (as I was super dehydrated) and an injection which I was told would take away the nausea and vomitting. Almost immediately this worked and I was my normal self again. My blood tests (apologies, I'm not sure what was tested) came back without any indication of what it might be. The nurses said they thought it was just a bug. When the doctor came to check on me she many questions: pain location, stool colour, was there blood in vomit or stool, how severe on a pain scale (the answers being abdomen and maybe even my back, just brown, no blood present, and the pain was 10/10- I know this sounds over the top, but I am telling you that the pain I was undergoing was verging on making me unconscious!).
The doctor then carried out an exam on my abdomen, which didn't hurt at all- apparently indicating that no lasting physical damage had beendone. Despite not being a specialist, both my parents and I were very impressed by the doctor. She believed that it was probably bacteria located in my small intestine. I had a stool sample taken, the results for which I will find out some time next week. I am also going to have a blood cultures test carried out which may prove insightful.
At the moment I think that the doctor is quite possibly correct, however, I am also wondering if it is coeliacs disease or a lactose intolerance. i say this as either the pasta or small amount of yogurt may have been responsible for the second bout. That said, other than possibly being coeliacs, lactose or bacteria overgrowth related, it may be an infection, c. difficile, kidney stones, gallbladder, ulcer etc etc. If anyone reads any of this and has any information as to its cause I would be extremely grateful. I'm finding this situation almost debilitating. It's making me nervous of eating anything other than brown rice, fruit and vegetables! I did however eat a very small amount of cous cous today and also had a couple of spoonfuls of yogurt, neither of which seem to have had a profound affect on my stomach (touch wood!).
Just to let you know, I'm otherwise a very healthy and fit 21 year old guy. I have had absolutely no health problems. I eat lots of fruit and veg, do regular exercise and am always hydrated. I do not even drink alcohol (or take drugs)! I'll post on this site if I receive some useful information. Thanks for reading this rather lengthy post, and if you're going through what I am I feel extremely sorry for you. My advice would be to go to a hospital the next time you begin to experience the symptoms as they have medication which can prevent hours of agony!