Faint Positive Cheapie but Negative Clear Blue Digital Read!!! 😞

I hope someone can help me long story short in early August I had a chemical pregnancy my doctor watched me as my level dropped to nothing so I know all my HCG was gone...I haven’t even had a cycle yet and I thought it was odd so it took a couple of cheapies and they all had faint Positive lines yesterday was super faint and today was clearly a little darker. However I took a clear blue digital read and it came back not pregnant. Has anyone experienced something like this?