Help!!!

Heather

So, I took 3 hpt 3 days in a row all with fmu (I know, I shouldn't do it every day). The second days was a little darker than the first but the 3rd was lighter than the first one!! Should I be worried?? I called the doctor but they wont see me til the 28th. I miscarried in May n I'm so scared this could be a chemical.