Hi, about 3 or 4 days ago i started getting a sort of sharp acheing sensation in the interior of the head of my penis, provided any slight pressure was applied around the head. Im starting to get a bit worried now as it has not gone away, its not TOO irritating, but im still very aware of it and i cant find any answers anywhere as to what it could be. I would be very greatful if someone could enlighten me as to what this could be.

Thankyou.