Hey bud, sounds like you're lil guy is still healing some from the pimple. Doubt seriously if you did anything with a nerve, pimples arent' that deep. However, it may take some time for things to return to normal. IF there is any swelling that can be painful, especially when you are erect. Give this some time to heal good and I suspect you'll be fine in a few days. Be sure to keep that area clean to prevent an infection!