Hello , I am 24 old unmarried guy. Last 2 days back, I went to have sex with call girl and it was first time for me. At bed room, first she removed her clothes, she became nude and later I have also removed my all clothes. After seeing her, my penis was not standing properly. It stood up for some moment and I pushed my penis (Have used condom) into her vagina but only my penis tip went inside to her vagina and it went down. After some time, I tried to bring it up by masturbate and till that time, the sperm came from my penis and again it went down. So we didn t have sex. At last my sex was 100% flop. I don t understand. still why penis is not standing up? Before 1 day night , I did masturbate.. Is that reason was for that ??? May be masturbate was reason for that...? but still I don t know what is proper cause for it I am much worried about it.. Please help me