So confused please help

Ma

I am so confused. I got positive tests Friday Saturday and Sunday. Called and got my blood tested today got the results back at a 3! Wtf!!! Does this mean I had another chemical? I had a little cramping last night but nothing after that. I swore I felt implantation and I was so sure when my tests were getting darker. I am heart broken I thought we were going to have a baby. Has this happened to anyone before? I came off the mini pill in July and have had irregular periods.