i cant wait for that all to kick in..lol whens it supposed to happen

18w+ and counting...
For me it just sort of kicked in all of a sudden at nineteen weeks. I'd been feeling exhausted and miserable before then. From my past experience (this is my sixth baby) it will last for me until about thirty weeks when I will be huge - plus that will be the middle of the hottest time of the year. Thank goodness I live near the beach! (Although I may have to look out for the Greenpeace people coming to roll me back into the water....)