WHAT IS GOING ON?!

I recently had a positive pregnancy test 3 days before my period on a frer and then my period came, heavy as per usual. Also passed a big clot, and lasted the normal 5 days. Well fast forwarding to day.. 4 days after my period and I randomly bleed, I took a strip pregnancy test and it came up positive! So I bought another cheapie one in the shop and that was also positive! When I took the exact same test when I got my first positive they were negative.. why are they now positive after af?

I’m so so confused. 😢

Tests from today!