Baby boy is Measuring big

So I had an appt today with an ultrasound because my belly measured bigger than how far along I was 2 weeks ago. I am currently 29 weeks exactly and when they did the measurements, baby boy is basically measuring in length 2 weeks ahead and at around 4lbs 2oz.

They told me that I have to get one of the diabetes glucose monitors and record my levels like 3 or 4 times a day. Even after I passed the gestational diabetes 1 hour test with flying colors. I mean my levels from what I seen were damn near in the middle of the low and high ranges.

I guess my question here is, has anyone else had to go through this? I think we are just gonna have a big baby since his daddy is 6'4 and I'm 5'6.