What do you think this is????

For one week I get this pain in my upper left stomach when I lay on ym left side or on my stomach it is pretty bad. I went to my doctor he put me on heavy duty antacid medication. I dont feel any heartburn or anything It is a pain like someone stabbed me or punched me in the breast bone but only when I lie on my left side. What could this be. I have to go back for an ednoscopy if I still have it in 2 weeks. anyone experiance this I am really worrying.

 it could be gas.....I get a similar pain every now and then.  I assume the ready,aim,fire position and out it comes!lol.  get on your knees and put your head all the way down (on the bed or floor) point your butt in the air. you wanna keep your knees kinda close to your chest. Also lay on your back and press down deep just below the belly button and hold it for 10 seconds release and repeat as necessary. These are tips from my gastroenterolgist. Hope it helps

I don't know what the pain could be, but I did enjoy svera's very descriptive directions!  LOL