Constant gurgling of abdomen - loud bubbling and swishing

I have been experiencing constant gurgling of my abdomen for the last 6 months. It is extremely loud, enough for my entire class to hear over the teachers lecture. Most of the time the really loud noises originate from my stomach. Then other times I hear a bubbling and swishing sound in my intestinal area. I also experience extreme bloating, and gas daily. I have tired eating small snacks around the clock to help with these noises..but no difference. I am on probiotics and digestive enymes. I have upped my fiber intake as well, although I have always eaten a well rounded diet. I cut out carbonated drinks, milk(lactose) and candy...but still no relief. I have not always been this way, it just started within the last six months and its not getting any better. Sometimes I feel a little pain from gas, but other than that no major pain..but there is a discomfort that I feel, like my stomach is not acting right. Please help advise me as to what else I can do or something that may help relieve this discomfort.