Just a quick response as my 10 month old is crotchety so I'm about to log off.

I must have ovulated while BFing (I was BFing morning and night only), because I concieved DS2 without getting AF or any obvious sign I was ovulating. DS1 was approx 12 months at that time.
At the moment AF still hasn't returned, and we're down to 3 BFs.

I should think that charting temps might give you an idea about ovulating, but other than that I'm not much more help.