Eta: I see that your ob said your baby is doing fine. So what are you afraid of? Your doctor said babie is ok because baby has things happening that indicate baby is OK. If it's size, Babies take nutrition from the mother.A baby will take what he needs even if taking it depletes his mom's supply. If mom is healthy, baby gets everything he needs. When mom is healthy nothing needs to be done to increase weight. Weight is determined by more than nutrition. Their genetic make up has a great deal of influence on baby's size. A baby gets.his genetics from both parents. Baby can be small or large. Both are healthy. Babies with a small birth weight can still be healthy. Why don't you trust your doctor?
Where did you get the idea that something needed to be done? Why didn't you ask your doctor more questions so that you could be reassured? Please talk with your OB to get answers.
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I, too, am confused by the lack of information in your question. Sounds like you found information on the Internet or friends. And that you changed OB based on information from people who do not know you and your particular medical condition. What do you want a doctor to do? Did you talk with the OB about what you read and that you were afraid? What did the OB tell you?
OB doctors rarely accept a new patient at this stage in pregnancy. What did the new OB say about your fears? Is the new doctor doing anything differently than the old one? What does he say about your baby's condition?
Has a doctor said that your baby is in trouble, that not growing is or may be a problem. What is your baby's condition in other areas? Have a heartbeat, moving around, healthy size to be born?
You do know that a due date is just an estimate and is frequently wrong. My last 2 grandchild were three weeks overdue when my daughter's OB induced labor for one and did an already planned c-section for the last. Baby was healthy, delivery went well.
Doctors are required to tell you of a possibility if things may be different than what is expected. Is that what scared you?