My mother developed a wheat intolerance, which bloated her stomach quite severely. You could try cutting down on wheat products for a week, and see if it helps.
If its literally just bloating, then I don't think exercise will get rid of it. Oh, also eating on the run can create a bloating effect, apparently, because you swallow a lot of air. So eat slowly, sitting down.
That's all I can think of. Hope it gets better.