Just one thing, to my knowledge when you aren't on any HBC you are least likely to be ovulating right before your period. The luteal phase is when you are 100% guaranteed not to be ovulating or ovulate in the near future. Menstruation is part of the follicular phase, so ovulation will occur sometime soon-ish, and if you have long periods, short cycles, or a long luteal phase (therefore a short follicular phase) you could very well get pregnant on your period. Take someone with a 28-day cycle, 16-day luteal phase, 7-day period, day-12 ovulation. Unprotected PIV on the last day of the period could result in a pregnancy. But PIV on day 26 would not.
no subject
Date: 2012-02-22 05:26 pm (UTC)