Heavy bleeding but positive test!?!

Just curious if this has happened to anyone else or if anyone has an insight. I’ll probably be calling my doctor here in a bit.

I got a positive test on 2/19. AF was due 2/23 and she didn’t show - another positive test. Saturday night 2/24 I started having some pretty uncomfortable cramps and then Sunday morning I woke up bleeding pretty heavily (like more than I usually would when starting my period.) I bled all day yesterday and woke up this morning and I was still bleeding but less and less as the day goes on. So I took another test and it’s positive!? Light, but positive. What could be going on? I assumed I had a chemical pregnancy. I’m going to take a digital test tonight and see what it says.

What do you guys think!?!?