Editing Contraceptive patch (section)

===Backup contraception===
:*If someone chooses to begin with their ''patch change day'' as day one of their menstrual cycle, the patch is able to take effect in time to prevent ovulation (see Mechanism of Action below) and no form of backup contraception is needed at all.
:**In the case that one wishes to begin using the contraceptive patch following a first trimester abortion or miscarriage, patch application can be done immediately afterwards.  This can be considered the same as a day one start above, and no backup contraception is required.
:*If a user chooses to begin with their ''patch change day'' as the first Sunday following day 1, it is necessary to use a backup form of contraception such as spermicide<ref>{{cite web | title = What is spermicide? | url = https://picaboo.biz/what-is-spermicide-and-what-effects-does-it-have-on-our-body/ | work = Picaboo.biz | access-date = 2020-05-29 | archive-date = 2020-07-28 | archive-url = https://web.archive.org/web/20200728052450/https://picaboo.biz/what-is-spermicide-and-what-effects-does-it-have-on-our-body/ | url-status = dead }}</ref> or condoms for the first week of patch wear.
:*If the user is late placing her patch in the first week, or more than two days late placing the patch in the second and third weeks, they should apply the patch immediately, and then use a backup form of barrier protection for a week.<ref name = "Mayo_Clinic_Evra" />