My girlfriend just started ortho tri-cyclen. As I understand it, there are 21 hormone pills and 7 placebo pills. When a woman begins taking the pill, she takes a hormone pill each day for 21 days, then a placebo pill each day for 7 days. She should menstruate during the week that she is taking placebo pills.
I also understand that there is a thing called a "day one start" in which you "begin taking the pill on the first day of your period." What does that mean? I assume the hormone pills are taken first. Is the "first day of your period" the day a woman starts bleeding or stops bleeding?
My girlfriend started taking the hormone pills on a Sunday, which incidentally was the day she stopped bleeding. Because you start with the hormone pills and end with the placebo pills and a woman should menstruate during the placebo pills, we assumed that starting the day she stopped bleeding meant that she was doing a "day one start."
However, I just read on wikipedia that a menstrual cycle is measured from the first day of menstruation. That would mean that to do a "day one start" a woman would take the first hormone pill on the day she started bleeding. But I thought the placebos were supposed to be taken during menstruation? Does that mean she did a day one start or not?
Because you're protected from pregnancy immediately when doing a day one start, we started having unprotected sex immediately. Now that I know a little more about it, I'm scared we did it wrong and she might be pregnant. It's been three weeks so I guess I'll know for sure soon. Can someone please straighten things out for me? Please don't assume I know what ANY menstrual cycle related terms mean because I absolutely do not.
I believe a "day one" start means the day you start bleeding. Placebos cause menstruation due to (when using a combination pill) a decrease in progesterone. It causes a woman to have two periods in a four-week time slot in theory. Sometimes the second period misses because of the body trying to figure out what's going on. Give it another month, even if she misses this period it might be normal. See if any other symptoms show up, and worse to worse do a pregnancy test, or call a gyno/doctor.