I notified exactly the same feeling with pumping.I used bath mate.The first time I Think I overpump cause I get two small red spot.The othere times I was very carefull since ii don’t have gauge on my bathmate I just pump 2cm under my full erection.No red spot no pain nothing of nothing.But everytime after pumping I notified weak penis.So I decided to quit with pump and when I stop I’m getting better.Do not touch your penis.And a good solution could be cold water on your penis after an hot shower this wake up circulation..
Did you notified strange thing to your penis when you pump to much?Like different color after the session or something similar?