Hi, I am a 20 year old male who is in good physical condition. The take a multivitamin every day and take sulindac occasionally for bursitis in my shoulder. I am not sexually active in any way so I know that I do not have an std. The other day when I was masterbating I noticed that I had a lump on the right side of my penis about an inch and a half below the head. I immediately checked to see if I could find the lump when my penis was flacid, but it was impossible to find. I didn't masterbate for a week because I thought it was a lymphocele. Yesterday I noticed it was still there and only appeared near ejaculation. I have no clue what this could be and I leave town in 4 days to go to college. There is no way I could get a urologist appointment in time before I leave. Please help.