Gestational sac but no yolk sac?

Alisha • Caleb 21/03/2018 3:40am weighing 5lb 13oz! 🙊👶🏻 💙 Lylah Rose 19/12/2021 7.08am weighing 6lb 13oz 👶🏼💖

I went for an early scan yesterday as I’ve previously had an ectopic pregnancy they confirmed a gestational sac in the right place and showed us but they couldn’t yet see a yolk sac. They think I’m around 5 weeks and want me to come back in 9 days time to see if there’s any progression 🤞🏻

Me and my partner were trying for a baby at the start of the year but had stopped trying and was just waiting to see if anything happened so I hadn’t been tracking. Based on glow calendar this is when I would’ve ovulated.

Please tell me it’s normal not to see a yolk sac at this stage just yet?! 🥺 I must be closer to 4 weeks looking at the calendar than 5 like they suggested.

Any opinions/same experience welcome. I’m a big walking talking bunch of anxiety right now! I don’t want to have to be worrying until the 9th October 😭🥺🤞🏻

I should also add that I am known to ovulate later so this could be the case also 🤷‍♀️