Does anyone know about bbt? I have been exhausted, absolutely exhausted, and sore boobs which I NEVER have. I showed my temp chart to a friend and she seems to think I'm definitely not pregnant. Have only been temping since 30 Oct and I don't even know if I'm doing it correctly. What if I have a broke nights sleep? What if I have to twist myself round in bed or turn over to get the thermometer? Feeling a bit deflated as definitely thought it was my month. What should I look for on the bbt charts?