First ultrasound update!

Kaitlin • Wife 👰 | LEB 👧🏼| JEB 👦🏼| GEB 👶🏼| 🤰Baby #4
So I had my first ultrasound! I thought by the date of when I ovulated I was supposed to be 6w4d but my gestational sac is measuring 5w5d with a nice yolk sac! Couldn't see the baby yet but will come back in a week! I didn't ovulate out of the side I thought either so it makes me wonder if I was just off on my ovulation dates! They weren't concerned with me being a little behind because she said the yolk sac looked great!! I'm still so worried though. I go back in a week to hopefully find the heartbeat so I am staying so hopeful that baby grows by next week!! Anyone else with similar situation?