Reasons For Bumps Underneath Penis Shaft Strange Bumps On My Fingers?

Strange bumps on my fingers? - reasons for bumps underneath penis shaft

A month ago, I noticed that the skin of my little finger of his right hand.
I can not see outside, it feels like your comments under my skin. It does not hurt or itch, and not red, but is uncomfortable. Since then it has declined, but not completely

There are approximately two days, I felt much more in the middle of my ring finger (right hand)

Last night, I felt a middle finger on my (and again with the right hand tap)

What could be the reason?
Do you think it could be something serious? Should I go to the doctor?

Thanks in advance guys (: