Almost 16 weeks and scared

This is my first pregnancy and I will be 16 weeks in a few days. I am so nervous for my 16 week appt that something will have gone wrong. I’ve read so much that I can’t help but worry about a missed miscarriage.

We’ve seen our baby moving at my 9 week ultrasound and heard it’s heartbeat at 12 weeks. I never had morning sickness but was really tired with sore breasts and that seems to have eased for for the last week or so. I’m not sure if I’ve felt the baby move (sometimes I think I do but think maybe it’s just wishful thinking).

Any advice would be appreciated!