A., please listen! NFP is fantastic. It's the best thing you could do. Most people who tell you otherwise are either uninformed, misinformed (by contraception advocacy groups), get it confused with an antiquated method like the rhythm (calendar) method, or had a bad experience because they didn't use it well.
My in-laws practiced natural family planning and had all three of their children exactly when they wanted to. I have been married to my husband for 2 1/2 years, using only NFP (I have never even touched a condom), having a very healthy amount of intimacy and never getting pregnant, then when we decided to have a baby, we got pregnant on my second cycle, and now I'm four months along. :)
NFP is inexpensive and easy to learn, free for the rest of your life, and makes for happy families! It even works if you have irregular cycles, like my mother-in-law.
My mother-in-law is actually an NFP teacher and is currently counseling several couples on recognizing their fertility after baby and during breastfeeding, as well as couples coming off the Pill, and couples with no special circumstances like her oldest son and me. If you'd like to send me a message I will gladly put you in contact with her, I know she will be happy to help, and she charges virtually nothing.
If you want to see some official info before making up your mind, here is the Billings method website:
http://www.boma-usa.org/
And just to let you know, although the information here comes largely from a Catholic or religious perspective, that in no way makes it a strictly "Catholic" thing, it's just that group which promotes NFP most strongly. The science is sound and the rewards are many!