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To get pregnant you need to have the follicle mature 22-23 mm and rupture releasing the egg and it happens on the 15th day in a regular menstrual cycle.As you had PCOD
and irregular periods
it may known only after follicular study
so please keep on doing it as you have started and in next 3-4 days the size of the follicle should reach the maturity and if it does not happen then you will need HCG
injections in next cycle which your
Gynaecologist will decide based on your follicular study report.