Has any1 ovulate late 1st cycle after mmc

Breeze • MC👼 on ^7/15/18^ @8.5 wks. TTC 🌈👶

Had mmc July 15 started my 1st period Aug 28 bleed 8days ended Sept 6 . been taking opk once a day everyday and not 1 positive yet. Ladies I'm losing my mind I might not ovulate this cycle why is this ?? WhT can I do 2 regulate my cycles and is vitex something I should consider buying today ?? PS: I'm on CD 18 and still no positive OPK yet. BEEN BD everyday twice a day and no positive . so I'm scared I won't ovulate anymore