I wouldn't worry unless your doctor says to. Baby can grow and you are capable of loosing weight. I did up until I hit about 6 months. I'm actually excited because it looks like I might loose a few pounds in delivery. MOST of your weight gain comes the last trimester :).
I'm 19 wks and have lost 15 lbs since getting pregnant. Dr is ok because its not a drastic amount at once. Just keep lines of communication open with your Dr.
Thank you both that is very helpful. Good luck to you both
I lost weight in the beginning im 6 months and have gained about 20 pounds but gradually my dr has not made a peep about my weight i think as long as its gradual and the baby is growing you're ok :) maybe try pigging out a bit or find someone like my husband he shoves food towards my face and says feed my baby! Thats prob where the 20 pounds came from lol