Sir,i am 26 m, 5 11 wt 76 years old, having no illness... few days before i indulge sex with my girlfrind in my flat... while foreplay it was quite ok from me, but while i was going to insert , my panis comes down.. i am little bit shamed & affried that i am sexually ok or not... bt truely saying that that time i had some mental disturbance.. plz help me.. i was a frequent mastebeating before that... should i stop that or concern with doctor???