gas pain

I think I've been having gas pain on my right side. It doesn't hurt to the point that I can't do anything but it's super uncomfortable. I've been feeling this on and off since I got pregnant and sometimes it last for a few days. I go to the bathroom sometimes more than once a day and try to drink a lot of water. For the most part I'm pretty active too. Does anyone else have this problem and know how to relive the pain/discomfort? It feels like gas but does gas pain last for days? Any help would be greatly appreciated. Thanks:)