A lot of unprotected sex and not gotten pregnant. Am I safe to go without?

Russian roulette. Is russian roulette safe? By having unprotected sex, I assume with lots of men, you are exposing yourself to sexually transmitted diseases, harm to your mental health, risk of pregnancy and exploitation. If you must have sex, at a minimum use barrier protections consistently. Talk to a counselor to see why you may be engaging in a self destructive behavior.