Gas issues, please help?

Hi, I am a 17 year old girl who for the past almost 10 months has been dealing with constant gas, belching and minor bloating. I've went to my doctor who has suggested things such as activia, laxatives and the gas relief pill but nothing has seemed to have an effect. The gas starts in the morning when i wake up and continues throughout the day. Sometimes i can go to make a bowel movement and the gas will stop but only until i eat something else. My bowel movements are also difficult for me to have and the stool is hard and small. I can eat virtually anything and it gives me gas. The gas doesn't have an odor to it, it's like it's just air. Sometimes my stomach and the area between my lower abdomen and leg on both the left and right sides just growl like crazy, sometimes even causing discomfort a bit. Because of this issue i have been stressed and i've had severe anxiety, i get nervous just being around anyone for fear of flatulence and it's driven my self esteem to an all time low. At times my nerves seem to cause gas too. I'm going to a College Campus live-in in 2 weeks and i need this problem to be gone or atleast controllable by then. Please help! :(