Positive OPK right after AF. Help Please!

Kira • TTC 1st for 15mons and I finally had my BFP!

AF was December 26-29 and was just as heavy as all my previous AF. Today being CD8 I decided to start taking my opks and it was SUPER POSITIVE! What’s going on ladies? I normally ovulate CD17-CD20, so this is crazy early.

Do I keep testing today? Do I BD today? Do I take a pregnancy test??

So many questions, thanks in advance!