Baby is measuring Big

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Hi ladies. So I had an ultrasound done last week and my baby girl is measuring big. At 30 weeks exactly she was measuring 4.0lbs. I was wondering if any of you ladies were told that before and if so, does that mean that the baby will be big at birth? Her daddy and uncles on both sides of the family were all over 10 lb at birth, so I'm freaking out, so I'm guessing there is a possibility she will be pretty big
***🤔 how is she gonna come out of my 🍪😳😖, def don't want a csection.