Suggest Remedy For Rigidity In The Foreskin

HI

I am 30 years old man next year i am going to get married.Well i have a question to ask well my Foreskin is not moving down when it is erect well will i have problem while having sex,tell me some tips to see my foreskin comes down and i can have sex with my wife.
Next question i have been mastrubating daily for 19 years daily and that to sleeping on bed and rubbing my penis on the bed well it has changed my penis size will this affect my sex life or should i quit mastrubation so that my penis regains its strength i am really in tension what should i do to regain sperm count and the foreskin not moving back wards.Answer through mail

Thank you