I recently tried to have sex with a girl when I was drunk, but I knew I wasnt going to get it up because I was drinking, but I wasn't hard at all. I think the feeling of rejection has hurt me and I haven't been able to get it up or keep it up for a week. 

I used to masturbate way too much, sometimes like 4x in a day and in a row, so not sure if I did damage, but have greatly cut back. Have not been able to get or stay firm for sex with several different girls for the past few months, although most times were after drinking. Even when sober, erections have not been 100%. I haven't masturbated for a week and am getting very weak erections and am not able to maintain them even when masturbating (this week,this usually isn't normal). I am 23, what should I do? Please help