Does Primolut Delay Periods?

I have taken Primolut to stop delay my menstrual cycle to see a Gynie, I am 22, my husband and I have been trying a year for a baby, what I would like to know: When will you ovulate after your period starts after taking primulot, will my ovulation day change? And can I expect an erratic menstrual cycle after treatment? Will my ovulation be normal?