drinking water = SEVERE gas and bloating!!!
You're not using a straw are you? That increases the chance of you swallowing air with your fluids. I have to remind myself constantly to sip instead of drink like I used to, because "regular" drinking can also cause you to ingest air with your fluids. I gotta agree with your other reply---walk, walk, walk...that will help move the gas out of your system, and I hear the gas-x works wonders, although I personally have not tried it.