I am a 27 year old boy. I have had sex 3 times this week, with 3 different women. I get a hard erection during foreplay, but once I insert the penis for penetration, it becomes less hard and loses the sort of erection you need for stimulation. Consequently,I have neearly no stimulation, and am not able to ejaculate.
It has lately taken a toll on my psyche, and in fact today when I had sex, I had so much performance pressure. Please help.
Regards.