Hi there, I have understood your concern and I will suggest you the best possible treatment options.
First of all do not panic.
As you have rightly said overuse and irrational use of
emergency contraceptive pill like Postinor tablets can lead to menstrual period irregularities.
Such pills need to be taken only occasionally and only if you have unprotected sex activity in the fertile period of the cycle, meaning between day 10 to 20 of the cycle.
Frequent intake will reduce its efficiency and can lead to menstrual cycle problem.
I will suggest you to get USG done to know about the uterus and ovaries.
This will also help to rule out PCOS-
polycystic ovaries syndrome as a cause of your
irregular periods.
Secondly, please get day 2 hormone levels done that includes FSH, kg, prolactin and AMH.
This will help to know if raised prolactin levels is a cause for your abnormal
nipple discharge.
If so, please seek prescription support from your treating doctor for
Cabergoline for the same.
I hope this answer helps you.
Thanks.
Dr. Purushottam Neurgaonkar.