Sex progressing labour ?

boymomforever 💙💙🤰 • Mother of five angel babies, a happy and healthy 4yo boy & a 1.5yo boy & last baby and BOY #3 due June 20 ‘23 💙

I bled the last time me and SO had sex and I freaked out and went to triage. She told me my cervix was soft but still closed. I just had sex again but no blood this time. Some cramping though. Was just wondering if sex progressed your cervix to dilation and if so how long after did you give birth? I heard it happens but I’m wondering if it’s true.