Cycle changes after pregnancy/miscarriage

Spec
I was diagnosed with PCOS about a year ago, but as my symptoms are mild we've been managing it with diet. 
Before my pregnancy, I ovulated CD22 at the earliest (usually closer to CD30).
I unfortunately had a miscarriage and am on my 2nd cycle since. 
I'm noticing my fertility signs seem to be occurring much earlier. I'm currently CD9 and Glow is estimating 27% fertility.
Has anyone else found that a pregnancy/miscarriage has changed their cycles?