Do i have erectile disfunction?!

Do i have erectile disfunction?

Well im 22 years old...I masturbate fine...Have sex with my ex girlfriend like it was nothing...But with certain girls it seems i have a problem getting it up or keeping it up...I thought maybe it was because some girls i didnt really care for and i didnt feel comfortable around...but i was able to have sex with a few girls that didnt mean too much to me but then theres a few that i had problems with...now recently ive been dating this girl...shes great...so many great qualities and shes a really cool girl..well tonight she decides its time we have sex well lets put it this way...i last through 5 minutes and we switched positions and i lost my erection completely...shes very attractive so im not sure whats wrong...i wanted our first time to be great and maybe i was putting to much pressure on myself..plus we had to rush it because i had to go to work in 15 minutes...so i dunno im thinking i have a problem mentally and not physically...plus ive been used to having sex without a condom.

1 month ago
im really thinking its some kind of mental block...now i feel really bad that i wasnt able to really have good sex for the first time and im worried that i sent a really bad impression on her sexually...i really like this girl so i dont want to be lacking in the sexual area...any suggestions on how to overcome this situation??

try droping the soap for a guy...... you never know if your gay these days.