Once u take it off: During the 4th week, after you have not put on a patch, the menses should start. The drop in hormone levels (from not applying the patch) triggers the period to begin.
Answered 7/17/2013
5k views
A doctor has provided 1 answer
A doctor has provided 1 answer
6 doctors weighed in across 4 answers
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