What kind of baby-care is the infant getting? By that I mean, are you fully breastfeeding the baby, with a great deal of mother/baby contact? The return to fertility after childbirth is the most confusing time in a woman’s fertility cycle, and is greatly affected by the kind of baby-care you provide. If the baby is feeding frequently, that will effect how fast, and how fully your fertility will return. I would encourage you to contact your nfp teacher and have them help you look through your cycles. If you cannot contact your NFP teacher, my wife and I teach for the Couple to Couple league, and you can contact me via email and I will see if we or a couple near you can give you some help.
Pray for God to give you patience and perseverence. For all couples who practive NFP, what your are experiencing is the most trying time. “Do not be afraid” (Pope John Paul II), for there is help available.
Pax Christi,
John