TTC after miscarriage

Jennifer • Currently trying for baby #2!! 👶🏻👶🏻
I miscarried last Sunday at 5 weeks.  Any idea on how long it takes for AF to return?  At this point I have no idea when my fertile days are.
​Also, have you heard you should wait 3 months before attempting to conceive after a miscarriage?  ER doc said to wait one cycle.