Measuring ahead

Shawna
Went and did an ultrasound today, we were trying to get 4d of her face but she was head down and facing my back so we didnt get pictures of her face sadly. But im 28 weeks today and was measuring 30 weeks and 1 day with EDD july 4th. Is it a bad thing or could that be my actual date or just a bigger baby? Sorry if this is a dumb question. FTM here.