Have to count days: Because each calendar month is 30-31 days, except february, what happens when a woman has normal 28-day periods? Every month, her period will start on an "earlier" numerical day, except for in march. In march, her period should start on the same day it did in february, because february has 28 days. Of course, real life is not so exact (even 28-day periods vary a bit.
Answered 12/9/2013
5.4k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question