Sayang, I know this is scary, first pregnancy after 5 years mesti rasa macam pressure sikit. But honestly, growth discrepancies like this happen, and the fact that you're feeling okay, no bleeding, no pain is a good sign. Still, please trust your doctor's timeline for the repeat scan in 2 weeks instead of googling yourself into worry, TVS scans in early pregnancy can have measurement differences, and only another scan will give you clearer answers.
For now, take care of yourself, eat well, rest when you can, and try not to spiral (I know, easier said than done!). Your anxiety is valid, tapi it won't change the outcome, just focus on the next appointment. Sending you strength, mama.