Lactational Amenorrhea Method - can be used for 6 months or until your first postpartum bleed after 56 days postpartum. 98-99% effective. Lactational Amenorrhea may continue past 6 months, but the effectiveness of depending on it to prevent pregnancy is reduced. Must use a different method after the return of menstruation.
Ecological Breastfeeding - close to 100% effective in the first 3 months, 99% effective in the second 3 months, 94% effective before your first postpartum bleed after 56 days postpartum. Must use a different method after the return of menstruation.
Georgetown University's Postpartum Guidelines - Calendar-based postpartum guidelines. Can be used from before the return of menstruation until cycles regulate enough to use the Standard Days Method (SDM), or another method is chosen. If following the minimum standard with perfect use, it is theoretically 97% effective.
Marquette Method's Breastfeeding Guidelines - Uses the Clearblue Fertility Monitor (CBFM) to predict ovulation. Marquette University has developed breastfeeding guidelines for using the CBFM even before menstruation has returned and continuing through the return to normal fertility and combines well with other methods.
Systematic Charting - Chart cervical mucus (CM). You are unlikely to conceive if you consider yourself to be potentially fertile on days that you have CM until the evening of the 4th day of dry-up after each Peak day. Normally, there is enough CM before ovulation, especially postpartum, to warn you that ovulation is coming. Charting temperature can confirm ovulation but not predict it postpartum. (see resources for more information on learning to chart)
Related Wiki Resources:
Reasons to Choose Natural Family Planning - Why would you want to use charting to plan your family, anyway? Feel free to add your own reasons for charting!
Types of Natural Family Planning - It's not just the rhythm method. They've got this down to a science with options galore!
Resources For Learning About Fertility Cycles - Find books to read or websites to visit, find an instructor, post your chart online, and learn about how your diet affects your fertility.
Fertility Awareness Method - A quick-start guide to the Fertility Awareness, a version of the Sympto-Thermal Method taught by Toni Weschler in her book, Taking Charge of Your Fertility.
Common Abbreviations for Charting to Avoid/Fertility Awareness - BBT, EWCM, TCOYF, and more! Learn what all these crazy acronyms mean here.