Worried

Latoya • 3 angels 👼🏿👼🏿 👼🏿 2 daughters👧🏿👧🏿& expecting a baby boy in March 2020👶🏿

I'm 3 wks & 5 days. The hubby & I tried to have sex & I started cramping midway. It eventually subsided after 15-20 mins. I'm still a little worried agter we Mc'd in early Oct. I'm still waiting to see am OB. Any ideas? Could it still be implanting?