I have had a good pg, feeling positive, chatting to my bump, got everything ready and excited about birth, suddenly today i feel fed up, i have had no nesting instinct, can't be bothered with the thought of going through labour, find my dh boring, just want to go on a diet and start an excercise regime. Is this normal? and does it mean labour might be imminent? Also i heard that people who don't nest more likely to have pnd