Is this normal?????? To want to masturbate or have sex 36+2today...n afraid of triggering labor..

Soooo alllll out of nowhere (we've haven't had sex bcuz I'm so afraid of labor starting) my fiancés working and I'm extremely horny .,,,. Now usually our sex love is amazing but lately it's been me to not want to orgasim or even have sex bcuz I don't want to start labor this soon.. Right. Ow my baby is Reece so last thing I want is my water to water or contractions to start up.... What are the chances if we do have sex or I masturbate that does happening or is that all myths.