I have read that regular sex during pregnancy, as well as regular orgasms, can help make labour easier and shorter.... but who knows who writes these things... probably men lol

It is suppose to help. It's strengthens your pelvic floor to orgasm.

Good to know that it is ok to orgasm. I've had to make a effort to try not to because I thought I could loose the baby. Granted I'm high risk and had to be careful my first trimester.