6 weeks and Nervous

I found out I was pregnant around 4 weeks.

This will be my rainbow baby and I guess I'm just nervous. I feel tired and sore boobs but no morning sickness? With my first & second child I was sick constantly but with my miscarriage baby I didn't feel anything and I was 8/9 weeks.

I had a scan and blood test last week and everything seems fine but I can help but worry