Hi There!

My husband have used NFP since we got married, and I was a little aprehensive about the method during the post partum period after my first child. I completely understand what you are going through!
We had taken our classes through the Couple to Couple league, so when I started having some strange symptoms, I called up the Couple to Couple organizer for my state to have her answer some questions for me.
I was breastfeeding/pumping and my daughter had started on some solids by 5 months. Since my daughter had been only waking up at 4:00 am after going to bed around 9 or 10, my husband and I decided that in order for me to get my 3 hours of undisturbed sleep, that he would get up with her and give her a bottle of breastmilk at 4:00 am. This allowed me to keep up with my temps as best we could. If she happened to get up before 3:00 am, I'd get up with her. (we weren't co-sleeping).
By about 5.5 months I started to notice EWCM for about 3 weeks straight. So, my husband and I abstained through that period. When I finally called someone from CCL, she told me that my body was kind of in a battle with itself since I was seeing all this EWCM. I wasn't pumping or feeding enough for my body to keep fertility completely away, but enough to where AF hadn't showed up. She said, I should treat this as a fertile time. She told me that she expected me to begin AF within a couple of weeks, and if I didn't, to call her back. I started AF within the next couple of weeks. It was kind of a relief to finally begin to start over charting.
Did you take classes from anyone? If so, I'd suggest calling one of your teachers. I know that both books The Art of Natural Family Planning and Taking Charge of Your Fertility both had sections on post partum charting/temping. You could also go to the
www.ccli.org website and find a teaching couple on NFP in your area that you could contact to ask questions, but they only promote NFP NOT FAM.
I hope this helps some!