I have this really wierd problem I did'nt even know which category to choose to put it in! Well it goes sumthing like this: whenever I eat or drink anything at all, like even water, etc.; my stomach automatically expands and gets bigger. I don't know why but I went to my doctor and got my thyroids checked up but they were fine. Does anyone have any idea wat could be wrong??

I really would not worry at all. It is perfectly normal for your belly to get bigger after eating and drinking. It is a sack after all and will expand to fit what is in it.

Unless you are also having diarrhea/constipation or belly pains and as you have been checked out by a doc, then don't worry.