Worried about upper abdominal pains...

Alex • 25, ABD&OB/GYN RDMS
So to start this off, I eat about 4 times a day and about every 3-4 hours. Saturday night, I started feeling like what was extreme hunger pains and it has continued about twice a day since then. It's right below where my heart would be inside my rib cage and directly in the middle. It feels like my abdomen is squeezing very tight for like 2 seconds then stops then contracts again after like 30 seconds. The only thing that relieves it is eating. But I know I'm not hungry when this happens.. I've searched and it said either gall bladder stones or stomach ulcers...
I'm going to the doctor Wednesday but very nervous... Anyone have this before?