crohn's disease, ibs, or gastro infection? help!

For the past year I have suffered from acid reflux, vomiting, lower right abdominal pain and sometimes dioherra.  I feel very tired and have no energy, when I do exercise I often feel sick and have to stop frequently.  
After eating I have noticed I become very cold with goose pimples all over and recently the sickness has only gone when I have been hungry.
I used to regularly vomit just after going to bed so I thought it was the action of lying down which caused this and now I sleep sitting up in bed.  This has helped to some degree but I still feel really ill and this stops me from sleeping
The pain in my lower right side is like a stabbing pain.  
For nine months now I have been taking Omazeprole tablets, 40mg, but these have not relieved the symptoms.  I have consulted several doctors and consultants and none of them have offered me any cause or treatment for this which has worked.  
I am now struggling to go to work because I feel so ill and last week I almost fainted in the office, vomited and then had dioherra.  This was not because I had not eaten because I had the same food every day and have been keeping a food diary for the past month.  I also experience aching muscles.
Last night I noticed a yellow mucus in my poo.  
There is a family history of stomach ulcer and a cousin has Chrone's Disease but I have been told by the doctors that omazeprole would cure a stomach ulcer and so it is not that.
As I have had no joy from doctors I have been looking up my symptoms online and found this site to be really useful.  I was just wondering if anyone else experienced a similar thing and if you may have any thoughts on what it could be.  I'm a 25 year old female and it is beginning to ruin my life because I am constantly sick at work and at home. Having had it for a year, I hope not to have it for another year!  

[SiFromNB]

Sounds like you are in a very poor place right now.

I would suggest some simple natural steps to try and counteract the problem.

Eat yoghurt, wholewheat bread, wholemeal pasta, bannanas, fruits, and plenty of green vegetables and see how your symptons react then.

If you get acid, try and cut out strong flavours and powerful foods.

Tomatos may also cause problems, or they may cure them.

Also drink water, and avoid anything acidic. You could also search google for "alkaline diet" or "alkaline foods" and try and stick to a firm diet of non-acidic foods.

I would also recomend some citrus fruits like lime, lemon and orange to conteract the acid. Citric Acid is in fact Alkali and may help balance any acidity your stomach may have.

If a change in diet doesn't work, get your doctor to perform an upper GI and maybe even colonoscopy to try and see what excactly is going on.

I wish you all the best! don't give up hope.