I do what I can do and don't push myself beyond that. The few days I've had where I've just HAD to have a physical day have resulted in me spending the next two days in bed. I've simply not been able to exercise and have struggled from day 1 to have any energy to do anything at all.

As for food, all three of my long term pregnancies have been based on a diet of Red Rooster chips. I usually love chocolate but can't stomach it when pregnant so that's a bonus, but otherwise my diet is extremely hit and miss. I've tried healthier food but if I'm not actually craving it, then I usually either can't physically swallow it or if I do get it down then I lose it anyway. I've started making lots of vegetable based soups so that throughout the day if I feel a little better I can try to eat half a cup or so in the hope that I'll at least get a decent amount of vegies.

I really believe you need to listen to your body. If lots of carbs help you feel a bit better and give you a bit of energy to deal with your pregnancy and your little men, then eat them. I'm not sure how far along you are, but with any luck you'll start feeling better soon(ish) anyway, and then you can reassess what you can do.