Hi for the past few days I began to notice a small bump on my foreskin a little behind the head of the penis. Then after a few days it began to itch a little so I scratched it until the itching sensation would go away. After time it swelled a little almost like a pimple or zit. I tried to pop it like you would on anywhere else on the body and I notice a little white pus come out of the tiny bump. A couple of days later, the tiny bump reappeared with a little pus. Is this an infection or is it normal?