Pregnant after miscarriage.

Edith
Hi I'm 37 years old, mom to 3 awesome daughters ages 17, 16 and 10 months. I miscarried a baby this past August and had never experienced one in the past. I was 8 or 9 weeks pregnant when I miscarried. Well today I found out I'm pregnant again and I'm very scared and nervous but also happy. Any tips? Words of encouragement? Advise? Prayers appreciated. I can't see a doctor for at least another week but appointment is made.