Penis Erection. It also doesn't work.

Hi team, I am writing because of my sexual health issues...I come here with lots of hope to find effective solution for my sex health issues. Actually I did masturbation many times couple of months ago but from the last month I am realising that the erection of my penis has been vanished.. due to this, I'm feeling very upset and not able to concentrate on my work.. as I m going to start my marriage life in coming January, for this I'm double confused will I'm able to satisfy my wife or not... Because it's too painful for me if I'm not able to satisfy her... Please provide me some tips or medicine so that we both enjoy our sex life... Earlier when I saw porn movies that time also it erects and converts it very strong penis but now it also doesn't work...