Ovulation and Menstruation

Steph6219

The only thing I understand about my period is when it will likely come each month, how long it lasts, and that it means I’m not pregnant. Aside from that my boyfriend and I want to try to get pregnant and I never understood ovulation or menstruation in health class at all and still don’t know anything about them now that I’m 27. Can someone explain this stuff to me in a book for dummies sort of way?