This past week I've been having this cold(runny nose, congestion, sore throat, rollercoaster headaches, etc), but I also have a steady rotation I keep in check in a weekly basis.

What i noticed is that during the days i had sex while sick, i had trouble maintaining my erection. Initially it would be erect, but my erection isnt a complete hard on as well. Also, midway through fucking, my erection goes to a slight chub. This happened 3 times this week and they were all different girls so it wasnt necessarily that I wasnt attracted to the girls

Any ways to fix this?