Need a helpful opinion please

Does anyone else know what this could be ?? So my stomach gets so backed up with gas that I can’t even push it out. I can literally feel my stomach about to burst and have to lay on my back and literally push my butt in the air in order to relieve SO much gas. And sometimes when I do that it doesn’t even all come out, it’s so hard to explain and describe but I want to know if anyone has ever felt this... it happens to me ALL the time, just about every single day actually idk but it can’t be normal. Anyone have an idea of what it could be, please comment below I went to the doctor like a year ago and they prescribed pro biotics but the probiotics gave me yeast... I’m so lost on what to do !!! Please help if you have HELPFUL or KNOWLEDGEABLE advice or opinions!