Baby's weight at 3rd trimester sonogram vs birth

I had my growth sonogram today. I'll be 33 weeks on Friday. My baby is measuring 4 lbs, 8 oz. According to this app and the others I've been using to follow my pregnancy, it looks like in the 3 lb range is what is to be expected. Does this mean my baby is bigger than she should be or could come sooner than expected? Does this mean that she will be in the 8-9 lb range when she is born? This is my first pregnancy and I am so curious! And want to make sure that everything is okay!  What did your babies weigh around the 32-33 week mark? Was glow and other apps accurate with the weight estimate of your babies? And what was your babies weight at birth vs at the 32-33 week sonogram?