Hi, am 25yrs old, my hight is 2meters, i dont have any medical problem in my life. My question here is, after my first sex with a girl i.e after the first discharge, my penis becomes weak for the first 1hr. Am so worried sir. All i want is that, to be releasin like 4 to 5 times without my penis getting weak. What am i goin to b doing sir?