Thanks for you query.
I read your query and I understand your concerns.
Following is my reply:
1) Generally ovulation occurs approximately 14 days prior to next ovulation.
2) Based on your previous cycles, calculate the possibility of next cycle and substract 14 days from it. Ovulation will occur plus or minus 2 days from that date
I hope I answered your query. I will be available for any follow up query you have.
Dr. Mahesh Koregol
IVF & Infertility