Guess what? EVERYONE masturbates--babies, little kids, teenagers, adults, senior citizens. And guess what? Some of those EVERYONEs are Christians. Give me a break. God created us sexual, in God's image the Bible says. He gave me a penis and you a clitoris to make us feel good. Masturbation is not a sin.
Look at everything Jesus talked about in the Bible. He covers every topic concerning sin. He never mentions masturbation because it's not a sin. It's normal behavior in sexual beings. Adam and Eve masturbated and everyone ever since.
Masturbating alone helps you learn about your body and what please you. Someday, you will teach your husband just what you like and don't like. Believe me, he will appreciate knowing this because you're teaching him to be a better lover.
Christians masturbate. And if they say they don't, then they're lying, which is a sin. Give yourself a break. It's NORMAL!