I never temped but my cervical mucus was all over the place. Although my cycles did get pretty regular right away when they came back (at 5 months PP, booooo hissss!!!) One thing I would defintely advise against is relying on the information in TCOYF about LAM (lactation amennorhea method)...I met every single one of the requirements as far as nursing frequency, etc goes, and my period came back just the same. Now, my period did come back and that's one of the factors so I didn't meet all the criteria, but you never know when you just might ovulate. I know far too many people who got pg before they even GOT their first PP period while nursing to trust that.
mama to 3 girls: Abigail 2.12.05, Eliana 8.26.06, Willa 1.9.09
RN-BSN 5/11, CBE, former doula