I am experiencing weird stomach pain

Hello, I am currently experiencing something that has me scared. Even too scared to see a doctor . About a month ago I noticed a dime sized, soft lump at the base of my belly button. I never went to a doctor, but consulted a RN who told me it was an intestinal hernia . I called and explained the syptoms to my family doctor and he made the same assesment. If I hadn't seen the lump, I wouldn't have known it was there because there was no discomfort of any sort. Over the past few days the whole left side of my stomach has become very sensitive to even my shirt rubbing over it. It's not a crippling pain, but more like a dull, falling asleep(no feeling-tingling) kind of feeling on the surface and a squezing pain inside. That in itself has me worried, but for the last three days(a little less mild today) I had crippling gas that I've never experienced. I could feel belches all the way from my stomach up and they hurt so bad that they put me on my knees. And it was 3-4 belches like that every five minutes for two straight days. What scares me is that I could belch just walking through a room and my wife and buddies would all cover their noses. They said they stunk horrible. I don't know if the two could be related by a possible infection or what. I am a 31 year old male and weigh 175 pounds who is in very good shape.