i am a 41 year old male,who had intercourse the first time at 15 yrs.i knew from that first experience that i have pre-mature ejac.it has never gotten any better since. ive used drugs and alcohol to try to block,or numb the sensation,however that is a two edged sword,however ive always been able to get an erection.i can at times,not be able to stop climamax,after maybe 40 sec. into penatration. isthere anything that could help me,this has been a huge problem for,and i know it has affected my confidence,and my self-asteem.