AF due 9/19

Jill
AF is due 9/19 and my fertile window is this week starting today and ovulation expected Friday I believe. I had a miscarriage 3.5 weeks ago and was actually do for my period the 22 of August and it didn't come but I know a miscarriage can throw everything off just curious how long it took everyone else to get back on track,I have a gut feeling I may already be pregnant but I don't know