I have a question????

Tina • 30| Married| Mother of 3, had a miscarriage in December 2019 and Now one on the way 6-8-2021!
So I just had a baby two months ago and I got a BFP on three pregnancy test i took over the weekend. I was wondering when will my due date be. I had a period in April but would I got from that date or was I pregnant before then. Here are my test.Plz help