question: i have 1 bump on shaft of penis and it looked like a zit and when i squeezed it, it had a white discharge just like a pimple but it keeps having same discharge and won't go away...any ideas what this might be? I'm 36, 6'1", weigh 180lbs and I'm a single dad that's been dating same girl for 9 months..is this an std? is she cheating on me?