i had trapped air too after my c section, i feel your pain. they made me walk walk walk the next day. it does help.
Hopefully you have already gotten relief. But walking is the key. Also, you can take 2 simethicone tablets four times a day for gas. Or, a fleets enema if you have not yet had a bowel movement. Make sure to drink plenty of fluids, too. Oh, and a heating pad to your stomach may help a bit.
Can you walk a little? I know it's kind of soon after the surgery, but a little walking might help work it out of your body.