M.P.
I was also "a little" overweight when I got pregnant with my second, and developed gestational diabetis, this in a way became a blessing because it forced me to eat a lot healthier and I did not gain ANY weight the last 3 months of my pregnancy but my baby kept growing normally (plus I felt I looked a lot better)
I was scared of how I was going to end, size wise, because with my first son I packed on pounds the last three months but the diabetis diet helped me.
Now what I did...... count the amount of carbs at meal, I was allowed only 30 gms of carbs with each meal (you do that checking labels)...
Snacks
I would have cheese strings, which were very filling and good.
Almonds
Can you believe that you can have almost seven little pieces of LINDT chocolate???? they are 30gms of carbs
(not all chocolates, again check labels)
Protein bars
I little advise, I would have for breakfast an egg and cheese, sandwich, because of the protein it keeps you without feeling hungry a lot longer during the day.
Yogurt, is another good snack.
Milk
Let me know if you would like more information in the diet I followed, for me it really helped.
CONGRATULATIONS ON YOUR NEW BABY!!!