Likelihood of miscarriage after 12 week scan??

Chloe • 2 angel babies 😇 😇 ❤️ 1 baby on the way 👶 💕

Well I was insanely anxious before the scan, relieved, now anxious ha. 12 week scan, baby measuring perfect size for age, strong heartbeat, nice and wriggly.... how likely of miscarriage now???