i have been looking online for some sort of self-diagnosis but i simply can't seem to find one. I am currently trying to convince myself that my physical problem is purely psychological. I am 16 yrs old and have never done or eaten anything weird, but when i was younger i always would have terrible constipation. When i was about ten it got really bad and i started using laxatives and then about a year or two later my constipation slowly dwindled away and is no longer that much of an issue, but about a year ago i started having really bad gas issues [not that i had not had that much gas before] but it has now turned into constant belching and stomach pain, of and on, i sometimes feel as if i could go the whole day without eating some days i feel completely normal and then it will start up again i don't have heartburn or diarrhea and I'm not over weight, my constipation is not that bad i try to stay away from junk food but i do admit i could use more fiber in my diet, i absolutely love dairy products, and I drink milk and eat cheese just about every day and i could use more exercise the only other problems i have been dealing with lately are stress [which could be part of it] and i have really bad indoor allergies which means that i can usually be found with a [(sore throat, weak-feeling lungs, stuffy nose and sinus pressure) for which i take sinus medicine (non prescription)]please help i need answers good or bad