so im 16 and yes i know im too young to be having sex..however...im going out with a girl and we have intercourse...ive never had a problem with acheving an erection until 3 weeks ago where i cudnt get anything..and ever since that my erections havent been as hard....we've had intercourse once in that amount of time and it was fine..however it was harder for me to acheive one at that time also....im also not able to do other"things" i guess you cud say with my penis.....i know it sounds stupid that im on here but im really freaking out....my penis just doesnt feel the same anymor.e..whats wrong?!?!