Pink cm after sex during TWW

AJ • Due Jan 2019 👶🏻~ Teacher 👩🏼‍🏫~ Mama to two fur babies 🐶🐱~ Foodie 🥘~ Bookworm 📚

Hubby and I just had sex which was pretty uncomfortable for me (not normal) and afterwards during cleanup I noticed light pink cm. What’s the deal? We are on month 3 of TTC.