During the intercourse I am unable to enter my penis in to my wife vagina, she has a small and tight vaginal opening and whereas my penis is big. Due to this she is very afraid even when I am trying to insert my finger in to her vagina to make her vaginal opening bigger. I am able to insert only one finger and I am unable to insert my second finger. I observed that inside her vagina at the top there is a wall like structure called hymen My wife is very much interested in sex but her hole is very small, my question is that how long should I keep trying like this with my wife to make her vaginal hole bigger? Right now I am able to insert only one finger into her vagina. I have another problem while I try to insert my penis into her vagina I loose my erection some time. Please tell me how can I keep the erection for a longer time?