Leakage problems?

I have a very embarring problem. Recently, I've been experiencing some seepage throughout the day when I stand up and sit down or move my legs quickly. There is not a noticable noice, but there is an unpleasant smell and it makes my undershorts wet. The seepage does not appear to be any sort of feces as it is a clear and sometimes white-ish mucous sort of stuff. I don't really want to go to the doctor's office because I'm sure it would leak out that I have 'a problem.' Please help me.