Women whose menstrual cycles are usually between 26 and 32 days | |
Date of last period known | Start immediately |
Date of last period unknown | Start on first day of next period |
Special circumstances | |
Postpartum/breastfeeding | Wait for at least 4 periods |
Start after two most recent periods are about a month apart | |
Three-month DMPA injection used for contraception | Wait for at least 90 days after last injection |
Start after two most recent periods are about a month apart | |
Pill, patch, implant, emergency contraception, intrauterine contraception, miscarriage or abortion | Cycles before using method or pregnancy were 26 to 32 days long |
Start on first day of next period |
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