Ive had several several months of wonderful throwing up... and the whole diarriah/constipation roller coaster. its not fun. I'd suggest you ring your doctor and/or make an appointment and be truthful. Remember if you hide stuff from them they cant fully make you better, its not like he'll turn you in for smoking a bong

. If your doctor doesnt know what to do, they can suggest a specialist in that area.
My second advice, start on some saltines or lightly salted crackers or bread or something of that nature... and light broths. Dont eat a bunch at one time but make it small snacks or something until yoiu can see your doctor. These are the most none upsetting foods out there for your stomach right now.