Measuring small

Hi All,

So we went in today for our first check up, supposed to be 8 weeks tomorrow, but the tech said I was measuring 6/3. I know exactly when I ovulated (17th of Feb) and I got my first positive 7 days later - Feb 24th. I've been told this is common, but on a scale from 1-10 how much should I be freaking out right now ? 😫😕