Multiple painless contractions after sex?

Chelsea Alexis❤👑🌹 • Wife 💍 Mother of 1 👪 and baby #2 on the way 🤰🤱

Is this normal? I'm 29 weeks today and normally I'll have like one contraction after orgasm or sex. I know the dr says to come in if you have more than 6 in an hour and I probably had about 6 until I fell asleep. I'm not having any now. One was like 30 seconds long and it was only one area of my uterus not the entire thing. I just haven't experienced that yet and wondering if I should contact my dr about it.