Needing some reassurance

I'm 5w today. I'll be honest, the positive test hasn't quite set in mentally.

My first pregnancy was roughly 18 months ago and ended with a missed miscarriage which was discovered at an early pregnancy scan (I'm high risk).

That experience seems to be stopping my from accepting / enjoying that I'm pregnant again and has me convinced something is going to go wrong, which isn't a healthy mindset. My midwife appt is 24th May at 7w and I have an early scan booked for 6th June at 8w+6.

Any rainbow baby successes out there? Or anyone in a similar boat? Xx