Is it normal, pregnant dreams

A little over a month ago, I began seeing and having sex with a guy who I've had a crush on for years and like very much. Unfortuneately, he doesn't wear condoms when we have sex. Shortly after our sex life really got going, I started having scarily realistic dreams, scratch that, NIGHTMARES about being pregnant. I'm only 18 and, while I am pro-choice, I would never have an abortion. So getting pregnant is a big fear of mine. So, has anyone else had dreams like this?