I had that same worry before my first ultrasound. My husband just laughed at me and told the baby would be there.

Aweeee, I'm so happy for you hun.. I'm a first time Mom too & that appointment was amazing getting to see our little peanut.. we went in thinking we were 10 weeks & turns out we were only 8.. I'm a late ovulater even know baby snuck its way in there.. haha.. we are now 15 weeks & I wouldn't take this back for anything.. I'm so happy that you are joining this journey.. :)