Worried

Hi everyone. I had my first scan at what I thought I would be 8 weeks but baby was measuring at 7 wks 3 days.We heard the heartbeart which was unexplainable feeling. My next appointment is next week then I will be 12 wks 4 days. I am bit worried if everything is okay as this will be my rainbow baby as I had miscarriage in May just before 6 weeks. I can't stop worrying and stressing if everything is okay. All bad things goes through my mind all time.

How are dealing with pregnancy after a miscarriage?