Like Clysta said, no, if you don't want to get pregnant, then you need to either abstain from sex or start using protection! There are plenty of birth control methods out there and I would advise that you use one. The IUDs are really good and have low side effects, but either way, you should start using birth control and also condoms if you aren't going to abstain from having sex!
No. If you don't want to get pregnant, be more responsible and either abstain or start using protection.