Hi,
NFP is not to be used as a substitute for birth control. If I were you I would postpone my marriage until you are ready to commit to the full married life. There must be grave motives for not being able to carry a baby and for using NFP (aka rhythm). Grave. In fact at that point I would then speak to a priest. Sweetie, we live in a world that wants to have all its ducks in a row before we do anything. However, in reality we must turn to Christ to get our ducks in a row. He so wants us to be childlike…
"Amen, I say to you, unless you be converted and become as little children, you shall not enter tinto the kingdom of heaven." Matthew 18:3
I wish I could put my arms around you and say “it will all be OK, just let go and Let God carry you through…” I hope all works out for you.
I need to go do some laundry, or I’d search more for you … but here is something to get you started:
On The Question of Natural Family Planning.
and here is a cut/paste from part of that article, something to keep in mind:
** It is important to mention that Pope Pius XII placed a condition on the use of rhythm:
“Consequently to embrace the state of matrimony, to use continually the faculty proper to it, and in it alone, and on the other hand to withdraw always and deliberately, without a grave motive, from its primary duty, would be to sin against the very meaning of conjugal life” (A.A.S., 43 [1951] 845-846).**
Lastly, I would have a sit down with your parish priest, and your spouse to be. Because sometimes we seek answers in places that will support what we want, rather than going where we need to do find the truth.