For me,NTNP is just having sex when we fancy, NP. But having said that i'm tracking my periods with an App on my phone because i came off depo last year and i'm trying to work out if my periods are "normal" yet. The app tells me when i "should" ovulate so i can't help but try to "coincide" with this even though i know it may not be accurate! I'm just scared that i will be come obsessed so i suppose i'm pretending that I'm NT!