Baby weight

Shelby

I'll be 37weeks tomorrow and when I went to the doctor today she seemed concerned about the size of the baby we haven't had an ultrasound since November 11th and she was measuring 3lbs 12oz then which they said was a few ounces bigger than normal now they're saying she's gonna be small like around 5 and a half or 6lbs...this is my second baby my little boy was born c-section weighing 7lbs 8oz

I'm just wondering if it's something I should be worried about? I'm having a c-section January 5th