Measuring behind.

Kayla • TTC 2016-2019 Baby #1 born 1/14/2020❤️❤️🥰 Baby #2 born 2/23/2021 💜💜🥰

I had my first appointment yesterday for this pregnancy and due to my last period May 22nd I should of been 7 weeks 3 days but baby measured 6 weeks 3 days exactly a week behind. Is this normal? Is something going to be wrong with my baby? Will I miscarry?

The heartbeat was 135