Ovulation Post Mirena!

I had my Mirena removed yesterday with no pain and no bleeding. I also had it removed during my fertile window. My partner and I had unprotected sex yesterday and this afternoon, I am experiencing some very light pinkish red bleeding. Ovulation bleeding or just some delayed removal bleeding? (I only had Mirena in for 5 months and got my period every month when it was in) what do you guys think?