Pregnant a few weeks & blown up like a balloon?

i'm preg. just a few weeks (4 or so at the most), but my abdomen suddenly blew up; it's really bad right after eating, no matter what kind of food i eat. i also get stomache pains after eating. i'm a bit worried, bec. i never had this before. i'm about 9 mos. after a c-section- could it be related?