Different measurment. Help!

K
So i went for my check up i was 24 weeks and 2 days. And doc measure my belly she said i measure 22 weeks so ordered ultrasound. On ultrasound they told me i measure 25 weeks and 4 days and she said the baby is litttle bit on bigger side. And after utrasound i havent seeen my doc yet. Plz help ladies. What u think which one is more accurate? Coz with my first baby i had growth isssues. My firs baby didnt gain weight. Im so worry about it