Do you think I might have a hernia?

A few years ago I was running on a treadmill at the gym and when I got home I felt a burning sensation near the bottom of my bladder on the right. It hurt for several days before going away. I also had some total numbness on that side for a while. I have scoliosis so I wrote it off as a pinced nerve. But sometimes I still feel a burning sensation there once in a while, mostly when I sit and do homework for a while. And when I get stressed I feel weak down there.. hard to explain. I do not feel any "lump" or anything, but when I lay down on my back in bed and have to cough, I can feel a very fast "bump." I'm afraid now to do anything because I don't want to aggrivate a hernia if that is what it is. Anybody else had these symptoms? I don't feel anything when I stand, only when I sit and stress out over math or a paper. Thanks.