Realistic risk?

My last appointment I was 11w1d and baby had a great heartbeat. Doctor told me everything with me and baby looked great. I have another appointment this Thursday (2/4) where I’ll be 13w1d and I’m just really nervous that something went wrong. Realistically, as a healthy 20 year old, baby should be fine right? Especially since 12 weeks is apparently “in the clear” to start telling people. I feel like because baby had a strong heartbeat just 6 days before, it’s probably fine. I know things can happen in the blink of an eye.. I guess I’m just trying to calm my nerves.