Try low-GI. I had to do that this time (gestational diabetes) -- you don't particularly cut down on carbs, but switch to slow-release carbs and it helps to stabilise your appetite (eliminates blood sugar peaks and troughs).
I wouldn't restrict your diet during pregnancy. Just stick to sensible eating, including complex carbs like brown rice, wholewheat pasta, wholemeal bread. You do actually need carbs for energy, especially in pregnancy.
don't restrict your carb intake during pregnancy, you'll feel shocking and after a while you'll be stealing cake from wherever you can.
Eat carbs and protein at every meal, slow release carbs (like the ones already mentioned here) so basically avoiding the 'white' carbs.
big babies aren't directly related to a crapola diet. my mum is 4ft 11in, eats saintly food, she weighs about the same as the average bowl of cereal and gave birth to 2 babies weighting almost 10lb (ouch).
My carbs have been restricted so far this pregnancy - but not because I am concerned about weight gain. I am simply unable to tolerate carbs after about 1 - 2 pm as I have found that carb laden foods make me nauseous and can lead to sickness the next morning. The bouts of sickness I have had so far have been after a carby meal the previous night.
i cut back on carbs for much of my pregnancy and felt great. i did so because i was worried about getting GD (runs in my family), though i didn't. I did have ketones in my urine a couple of times though, which may have been because of fewer carbs in my system. the nice thing is i didn't gain a lot of excess fat. baby came out at 7lbs 10oz and three weeks later i am pretty much back to pre-pregnancy shape. i'd better be careful though - i am now eating carbs with a vengeance!!