Small Cerebellum

Hi! New mom here 🙋🏻‍♀️🙂🙂 I just had my 20 weeks anatomy scan last week & turns out I’m having a girl 🥰🩷🩷👧🏻🌸🌙✨ Everything measured great except her cerebellum. they told me she’s measuring behind but that in 4 weeks they will do a follow up to see how she’s doing .The doctor didn’t seem too worried about it but it sent me into a spiral these past days that I can’t stop worrying about her 🥺 have any moms here experienced anything like this and had a positive outcome ? The over thinking is eating at me everyday I just need some reassurance at this point 😣😣 I pray that my little one is okay 🙏🏻