Running 1st trimester

Kara

Hello! I just recent found out I am pregnant. In the past few months, I have begun running and doing weight Watchers. I just signed up for my first 5k (like days before I found out). I will be approx 12 weeks on race day. I know women run all the time while pregnant, but my question is do I need to take it easier in the first trimester? Thnaks!