Is menstrual synchrony fact or fiction?

Okay, so my mother does not believe, as I do, that when a group of women live closely together (i.e., in a dorm setting) that their menstrual cycles become roughly similar, due to the release of pheromones. I'm pretty sure that I heard this somewhere, but I can't find anything to back it up. I swear I'm not making it up, but my mom doesn't believe me.

Thanks for your help.


What are the different phases of the menstrual cycle?

1) You've mentioned a lot in this service about a woman's menstrual cycle, and the risks involved with unprotected sex. Details that you have mentioned include, for example, the high risk of pregnancy (i.e., as a result of unprotected sex or failed contraception) during the "fertile period" of a woman's cycle. What I would like to know is: what (typically) are the various stages in the cycle (e.g., ovulation followed by menstruation, etc.), when do they typically occur in the cycle, and, most importantly, WHEN are the (typical, of course) fertile and infertile (minimum chance of pregnancy) parts of the cycle?

2) When calculating the length of your menstrual cycle, what is considered to be the actual first day of your cycle? Is it the first day there is "red" bleeding, or does it also include the first day or two of brown discharge?


Where can I find basic information about emergency contraception?

1) My girlfriend and I had sex twice one night — the second time, we had to change condoms because she was dry and the lubricant had run out. Before I put the second condom on, she asked me to "put it in" without it on for a few seconds; which I did — not entirely all the way though. I instantly realized the mistake and withdrew. Naturally, as I expect, there is a small chance this could have gotten her pregnant. However, this was four days after her period ended, and the condoms we were using had nonoxynol-9 on the inside and outside. I had not ejaculated yet, as a matter of fact, I never did... and I had wiped the tip of my penis prior to doing this to avoid any pre-cum. My question is this: I'm hoping I'm right in assuming the chance of pregnancy is minimal — however, we are considering emergency contraception. What could you suggest?

2) My boyfriend and I had sex last night and we saw that the condom had broke. We don't know when it happened and I've been looking all over for the 72 hour correction thing that the commercials say — just in case. Can you help me?