My penis went red a few days ago after having sex ... It was with protection
Sounds like allergic Reaction from the protection you used maybe? Get it treated to ease it down
Can be! Would I have to treat it with some cream?En
Use an Antifungal cream like clotrimazole 1%.
If you were wearing a condom throughout the time you were having sex - and had no oral afterwards, for example - this could be a reaction to the condom you were wearing for penetration. Had you used this condom type before, is what you need to think about. Maybe you have changed condom Brand - change to a one that you have used before without getting this reaction, if this is the case ....