Thanks for your query.
I read your query and I understand your concerns.
Following is my reply:
1) In some women especially with PCOS
, ovulation occurs late. It might also occur after 20 days.
2) Still there is possibility of ovulation. Keep getting scans.
I hope I answered your query. I will be available for any follow up query you have.
Dr. Mahesh Koregol
IVF & Infertility