Who has had success with natural Family Planning? My husband and I have a 1 year old and we don't want any more kids. Birth control makes me super emotional and gives me bad headaches so I can't go back on that. I have a few apps that I've started using to track my ovulation and all that. He's deployed so I have a few months, I just wanted to see if it's possible to not get pregnant just by abstaining from sex during my fertile window.