So my boyfriend notices 5 bumps on his penis hours after we had sex. they have clear liquid and when popped they scab over. they aren't clustered.

Unsure: Hi Not exactly sure about what it is but a few thoughts: The timing of the appearance of the blisters would suggest that it is related to friction/trauma from intercourse, however it seems a little unusual that there would be 5 distinct blisters, in which, the timing factor may just have been coincidental. There are a few STDs that have this appearance and it never hurts to get checked.