What Causes Heart Burn And Tightness In Stomach?

For quite awhile my stomach looks like I am five months pregnant. For the longest time I had no discomfort and now I get heartburn quite a bit and sometimes my stomache feels real tight then other times no tightness at all. Yesterday I ate breakfast out eggs sausage and potatoes. Got home and had heartburn so bad and then in a couple hours got sick and bought it up. I do not get sick when I eat. Should I being going to the doctors.