Hi, I recently noticed a small red bulge, possibly liquid filled, bulge within my belly button. It's about the size of a BB, but it looks swollen and red, it isn't painful, at least yet. I have no idea what it is and haven't told anyone, I didn't notice it until last night and I hope it will go away soon like perhaps something bit me. The only thing I have done different lately is stomach crunches on a regular basis, I haven't noticed any difference in bodily functions. Is this a result of the Crunches I've been doing? I'm barely 15 years old, I'm about 6'4" and I weigh around 220, so I'm a pretty big guy. I'm hoping this isn't a sign of cancer or some form of Tumor, and just a result of the crunches, however my family does have a slight history of cancer. Unfortunately this thing does feel like it could be connected to something inside, I'm hoping this is just a swollen or torn muscle, or maybe a bug bite. Does anyone know what this could be, or have experienced something similar? I'm thinking I should see a doctor, but I really don't want to do this to my whole family right now %-) .