I'm new, and I need advice

Courteney • I am a 24 year old wife and SAHM of 3 kids. I am a geek and a bibliophile.
Okay, I haven't had a period since April of 2010. Since then I have always been pregnant, breastfeeding or on birth control that stopped me from having a period. I am currently 4 months post partem with my 3rd baby and breastfeeding. My period has yet to come back. How do I put that information into this app?