It was like this from the 19-22nd of this month. I have took a pregnancy test today. Not FMU

This was the test...and there is nothing there. The bleeding came a day and 1/2 late.

So confused!!! Any insight?? I have never had a period look like this. The pink bleeding has stoped. Now it’s just left over brown. There were no clots (which I normally have). I started cramping before I got the blood. I am still cramping and the blood is just brown now. This is super weird for me....