Miscarriage and trying again please help

Ari

So I had found out I was pregnant 9/12 I had a miscarriage and my period was expected that day I bled for about 12 days is my cycle off now being that I still got my period on the expected day but it was a miscarriage glow says I’m in my fertile window but me and my boyfriend have been trying since the bleeding has stopped curious to know how quickly I could get pregnant again