Hi ,
If your wife has
irregular periods , it's better to have those medicines & do follicular scans to confirm follicle size & ovulation. Those tablets are hormones which simulate a lady's
hormonal cycle , but hey cannot confirm ovulation.
To rule out other causes for irregular cycles hope you have done Serum
Thyroid profile / Serum
Prolactin , they affect ovulation.
You can have sex once her periods bleeding stops, daily or alternate day or as per your convenience. This is not for
pregnancy , it's to throw out old sperms. Older the sperms , poorer the healthy pregnancy chances . As life of sperm is only 3 days.
Have sex till 10th day of periods ( 1st day of bleeding is 1 st day of periods)
Then no sex for 3 days. This will help accumulate young sperms for the ovulation , which occurs usually around 14-16 day of cycle.
Have sex for 4-6 days, any number of times , daily.
Later than this is optional. Egg's life is only 1 day.
But this schedule can be followed only if cycle is regular.
Hope I have made it clear with reason.
All the best
Dr.Balakrishnan