I hear you!! I am expecting no 4 too and I have found I have less energy this time around than with any of the other three. I just try to snooze whenever I can...I am lucky because my older three are at school, so after I do drop off, I will come home and have a sleep till lunch. But that tiredness just doesnt seem to back off! Snooze as much as possible, try some sustagen energy drinks, heaps of water, and leave all the housework stuff that doesnt have to be done. Our lounge room looks like a chinese laundry at the moment because I just cant be stuffed...but it will still be there tomorrow and it will get done....eventually!!