So about a month ago, me and my boyfriend went to the beach. I gave him head for a bit underwater (maybe for 2 minutes) then when we went back to his place that night. I tried giving him head again and i could feel tiny, sand-grain sized bumps in the head of his penis. So we just figured that it was from the sand at the beach and maybe just got sucked in somehow. He said he doesn't notice them and you can't see them but you can feel them. He says that they don't hurt or itch or anything, they're just there and they've never been there before. Help ASAP