CP after period?

Cait • 25. Married. Mama.
So let me start by saying my LP is very short. 9-12 days, my period was one day early this cycle. One day light sporting, one day heavy bleeding and bam, I was done. 
I checked my cp and it's still high and closed. Could I have mistaken my period for something else? I won't be able to take a test until tonight so I wanted input from others who have gone through something similar