[quote="DoxaPatri, post:11, topic:234900"]
Thank you for your answers.
I know couples abstain for good reasons such medical reasons. Abstinence is one thing, NFP is another. When you have to abstain for medical reasons, you don't need NFP, you simply abstain and then when the medical issues are gone - God willing - why would you need NFP?
We have seven children, and when #7 was only a few weeks old, a doctor discovered that I had a huge blood clot in my thigh and was hospitalized for nine days. If I had had another baby, I'd be at increased risk to develop another clot. They would want to put me on blood thinners, which can cause some sort of syndrome in the baby. (I think it is called warfarin syndrome.)
It was serious, even potentially life-threatening. People do die from blood clots. I breast fed our son for a long time and did not have any cycles for 15 months post partum. I watched closely for signs of returning fertility, and we were VERY diligent in using NFP to avoid a pregnancy. I was 38 when all this happened, and we were SO thankful to have our seven children! If we had had another, we'd have dealt with it the best we could, probably going to specialists during the pregnancy.
We could have chosen to abstain completely, I suppose, until I was all the way through menopause (which I'm not, though the shop is in the process of closing up:):) ). I'm now 49. This would have meant over a decade of complete abstinence. I could see us doing that if the situation were extremely dire, but we prayed and talked and prayed some more, and chose what we thought was the best path.
The Church does not give a definitive list of "just reasons", circumstances in which you may use NFP, because each couple's situation is unique. God gave us minds and hearts with which to search for His will and apply it to our lives as best we can.
Pray every day and receive the sacraments often! God will show you the best path for you.