When did you learn about charting? - I learned about temping when I was a teenager. As for full on "Charting", about 5 years ago.
Where did you learn/hear about it? My mom. She had a small book with YEARS of temps in it. About 5 years ago is when I bought a copy of Taking Charge of Your Fertility.
How long have you been charting for this pregnancy? 23 cycles