Ohhh I feel you, that bloated trapped-gas feeling is the WORST, a few of my mum friends had the same thing, especially postpartum or when stress hits. Try walking around (even just pacing the kitchen), do some gentle stretches or lie on your left side for a bit, and warm compress on the tummy helps relax things; sometimes a warm drink like ginger tea or even plain warm water does wonders. If it's been going on for days or the pain is really bad, better check with the doc la in case it's something else, tapi usually just moving around and relaxation helps the air come out. Minum air banyak-banyak too!