No,one pill is sufficient for 72 hours .If you will take another it can lead to hormonal changes and period will be delayed.
A woman's peak reproductive years are between the late teens and late 20s. By age 30, fertility (the ability to get pregnant) starts to decline. This decline becomes more rapid once you reach your mid-30s. By 45, fertility has declined so much that getting pregnant naturally is unlikely for most women.
Immediately after a period, women may notice reduced discharge or mild vaginal dryness.
It can be due to bacterial vaginosis, a vaginal infection, that's caused when the balance of good and bad bacteria in your vagina is upset.