Hello Now I'm in my 12th week of pregnancy My third pregnancy is goin…

Hello Now I'm in my 12th week of pregnancy My third pregnancy is going well I have a son, and last year when I was pregnant, I had a miscarriage... The last time I had an ultrasound was July 31st, at that point it was 9 weeks pregnant. I scheduled a screening for August 26th I'm really worried now, is everything okay? ?? Can you tell me if there's any reason to worry if everything was good at 9 weeks? ?