TTC working out dates.... Help?!

Nic

Ok so I need some help guys. It may sound silly but I'm not the greatest at working this out.. my period usually came on the 9th of every month then I'm Aug17 I had a MC @6week3days so now after my first cycle from that it's from the 19th Sept my period came .. doctors advised waiting one full cycle to begin trying again, is it possible to be fully fertile after your first cycle after miscarriage? I counted that from around the 3rd Oct I would be ovulating and we had BD in and around that date.. do I have a good chance of falling pregnant or am I way off with dates? 😔