Please excuse my writing in English, I am an immigrant and I do not know how to write my question in Hebrew.

I consistently ovulate a number of days before my mikva day. I have 2 children who were conceived when my menstrual cycle was 28 days long. Now I am 34 years old and my cycles have been 20-22 days long for the last 4 cycles. My ovulation tests have been positive on days 9 or 10 of my cycle, which is days before I can go to the mikva. I would like to know if there is a way I can delay ovulation. Thank you, Aviva