Hi Roo, to be honest, your first af following mc could come at any time, most have longer cycles.  Can't give you any advice on when you will have ov'd but you are highly fertile following a mc

I mc'd on 28th August and still haven't had af....I have been told that if I wish to try and work out when I am/have ovulating/ed I should put the first day of my mc in as the start of my last period and 28 as the cycle length as that is the average length...this then told me that I was most fertile between 8-13th September....we only bd'd at the weekend therefore 20th/21st September....so does that mean I have no chance of being pregnant this month? How does it work? I'm new to this and would welcome your advice! xx