3rd pregnancy first child

Eva • I`m 27 years old and I`m married. I'm the proud mama of a 1 year old beautiful baby girl and step mama to a 7 year old beautiful little girl. Baby girl #2 is on the way!
This is my third pregnancy but pray to God my first child. Im 6W1D today. I'm stressing and worried about every little thing. Are there any other women that is in the same situation or maybe has some tips that I could calm down? I still have 2 weeks before I can go to my OB appointment.