I've only just had my first AF and Caleb is 15 months old!

He has been having feds overnight on and off. While he was having a sleeping through episode I noticed things like changes in my CM patterns and the occasional wopping zit (hormonal pimples are the biggest sign for me) then the monkey would go through a waking episode and my symptoms would dissapear!

I think that if you are wanting TTC then really keep an eye on any changes to your mucous pattern. That is the biggest sign that your fertility is eturning.
You should take note of how it looks for a week or two then ANY CHANGE can indicate you are fertile. Don't jut look for the eggwhite stuff as it may be scarce due to the prolactin hormones.

Study the Billings Method as it has a chapter just for b/f.

I use Billings as a birth control method and find the book invaluable