PiYo lower body define and pregnant

Teresa • A flower bloomed already wilting. Beginning its life with an early ending 🥀 RIP my little angel baby 👼🏻

I will be 12 weeks pregnant, tomorrow. I got the okay to do PiYo from OB. After workout I noted a more pinkish not red spotting. Anyone ever had this? It makes me scared because on 12/7 I went to the ED because I was passing clots.