i had sex 3 days ago, and did it 5 times within those 3 days, during the last session of intercourse i felt pain, in the left side of my scrotum, we had unprotected sex and there was not much lubrication, i thought it would have been the dryness, but i was suprised to find at least 7 puss filled bumps in that painfull area, only 2 are red but it hurts to put pressure on these bumps. what could be the cause of these bumps?