Hello, I Am Pravin From Mumbai. My Head Of Penis

hello, I am Pravin from mumbai. My head of penis is covered with skin.,i can easily pull back my skin from head. the head is connected to penis with little skin. During intercourse the skin get pulled back and the joint skin of head n penis get tight and pain. what should i do. can i cut this with blade at home?
I want circumsize penis plz suggest me.