This is kind of embarrassing, but just curious. Can an orgasim cause you to go into labor? The doctor's say it is safe to have sex, just wondering if it is safe to have an orgasim. I was on pelvic rest for most of my pregnancy due to placenta previa and we could not have sex. We were given the ok to have sex at the beginning of my 8th month. We only had it one time (I had an orgasim) and went into labor the next morning. My son was 18 days early. So I'm just curious if the orgasim did it?