Thanks for your query.ou have certain doubts in your mind as regard the\ill effects on your health anfd infertility
due to masturbation
I would like to state that it has been discussed in scientific forums all over the world and proved that masturbation does not have any ill effect on any organ in the body or it does not cause infertility in future.Hope this will remove myth from your mind.
As regards your second query from the fact which you have stated it appears that you have what is called as Phimosis
and you need to get circumcised .Please consult some surgeon who will examine you and decide further treatment.