my boyfriend has one long off wknd once a month, and my period will fall on his long wknd for the rest of the year. i have a (1) new pack of birth control pills at home with me, how long or when should i start taking them to "alter" my period dates.
i hope this makes sense.
(he has a calendar for the rest of the year and i was going off of my period app that is very accurate)
If you are already taking BC then changing the date you start the next lot could leave you unprotected with a risk of getting pregnant and even if it did change the start date your cycle will only regulate it's self back to its original time after a few months again, nothing will change the start date permanently.