My sister (27/F, married, nullipara with no other gynec issues) is due for her cycle on the 7th of feb, however we have a very important event starting from the 10th of feb. Earlier for a similar situation, my doctor has prescribed me Meprate 10mg. Can she take the same starting tomorrow i.e Jan 30th. The function ends on 15th of feb so is it safe to take the medication for almost 17 days? She has no other medical issues except some skin issues for which she is on Tretiva 5mg OD and Aldactone (50) as advised by her dermat.