Ok needing help desperately!

Kelsie
So last Thursday (3/3) I took a pregnancy test and it was positive. The next day I took one early and it was negative then I got really bad cramps and heavy bleeding for the next 4 days! Now 1 week later I took a test this afternoon and it was positive! Has anyone had this happen? I thought the bleeding was a chemical pregnancy as I was 3 days late! Please help! 😣