Hi. Im 18, and a female. For most of my life I have had gas issues, these are usually from me being lactose intolerant (so when ever I eat cheese or something milky). Recently (for the past month or so) Ive had random bouts of sickness almost like the flu. At first I thought it was just something I ate and had to get out of my system but its been weeks now and I think it would be out by now. I usually get sick after I eat and late at night (around 12 or 1), I get stomach pains, where I feel like I am going to throw up but never do, I get light headed and have trouble breathing and feel very tired, and I have to constantly burp to help with the nausea and pain. I also get sweaty and cold with clammy hands. Lately its been more in my intestinal area then my stomach. At first I had diarrhea but now I cant seem to go at all. I dont know what this is and it seems to happen at anytime. Ive always had trouble sleeping and I have low iron (which I have been taking vitamins for). Could something be wrong with me, or am I making this a bigger deal then I need to?