Weight predictions via ultrasound

Teralee
I had my ultrasound yesterday at just under 33 weeks to check my placenta. I asked the sonographer if she could tell me the approximate weight of my baby she told me 7 pounds!!! She also said it looked like my baby was possibly a few weeks older than 33 weeks (more along the timeline of 35 weeks). I'll receive more accurate results in a few days when my doctor can go over my ultrasound report. I asked the doctor about what the sonographer said and she told me not to worry because it can only be so accurate. Just wondering about anyone else having a similar experience and the outcome they had! Sincerely, first baby noob.