One month behind

Janice
I went for my first pre natal check up today but upon doing the sono my doctor told me that I am 1 month behind, there's no baby yet and she can only see the sac. Supposed to be 7wks and 4 days, she said maybe I conceived in May. Going back after a week since I am having a high risk pregnancy because I also have a cervical insufficiency. Please include me in your prayers.