3rd month ttc since mc...age is not on my side

Had my mc in mid November at 8 weeks... waited for one cycle and started to try again at the end of December and January... cycle has been all over the place... got af today 9 dpo... (after positive opks) I’m getting nervous...

37 years old time is not on my side... anyone get af this soon after ovulation? I’m getting worried something else could

Be wrong