I have a small concern which I don't think is too seriuos but I wouldn't mind clearing things up. The other day I noticed little tiny white dots under my penis so I kept toching them because I was getting worried. A day later it went into a lump a blister sort and now its starting 2 puss any help chris:)

You need to make an appointment with your doctor to have this checked out.

You do not metion if you are sexually active, this could possibly be an STD. I can't tell you that it is, cause I can't do an examination over the internet, but you should have this checked out.

It could be nothing more than a simple pimple, but to be sure make an appointment with your doctor.