39 weeks pregnant

Michelle

I know I could go into labor at any given moment but I went to my follow up OB appointment yesterday and I was only 1cm dilated... I decided to have sex with my BD last night and I was spotting light brown when I wipe. I thought I was having contractions but my stomach was only hard where the baby was positioned not on my lower uterus?? Am I going into labor or was that just after sex contractions? I’m also a first time mommy