I would watch what I eat but I would put the carbs back in the diet. You are eating for two as you are the "host" to the baby and baby will take what it needs from you and you will pay the price later in life. Eat Eat lots of green and yellow veggies. Do do the whole wheats for grains even pasta is made out of grains so you can have your spaghetti.
Exercise moderately, take walks and rest. You are building a baby and you need your strength to do so.
Good luck to you. Do talk to your OB about your nutrition plan. Keep us posted.
The other S.
PS I was one of those moms that lost the weight and went home from hospital in regular clothes with a little tummy. I ate all I wanted and there were times while pregnant the food didn't stay down even though it was good and freshly made. I am surprised that m daughter loves apple pies as I went on a binge for about three weeks of making home made pies and losing it in the early morning hours to the porcelain god. She weighed 8 pounds at birth I was 173 and when I weighed after delivery I was 140ish. Five days in hospital (because that was the hospital's rule for the earliest release) I had a full milk supply and was ready to be a mom.