fertility awareness

The short answer is... when she's okay with or wants a pregnancy or a sexually transmitted infection. Here's the longer answer, since it's a bit more complicated than that. To get you up-to-speed with the basic facts, when it comes to pregnancy, of every 100 women who have vaginal intercourse...

If you want to use a behavioural method or spermicides and need help deciding between them.

If you're considering a nonhormonal method or practice of pregnancy prevention, and want help deciding which one(s).

The Fertility Awareness Method (FAM) is a means for women to observe the three primary fertility signals: cervical fluid, waking body temperature and cervix changes so that you can be as in-the-know as possible when it comes to your own fertility and menstrual cycle. Find out the basic how-to so you can make the mystery of your own fertility cycle become a lot less mysterious.

First off, kudos to you for being such a great cousin! Signs of when a person with a uterus is about to start their period vary greatly from person to person. Some people have tender breasts and cramps as you described, others have headaches or nausea, while others really have no pain or discomfort...