OMG..... I'm pregnant !!!!! Ahhhhh?

Omg I can't believe this ... Was insemanated on dec 2nd and took a test on Sunday (dec 12th) came back negative and I was so upset and I went for a blood test yesterday and they called today and it is positive but it is only 5 !!! I am so excited but also so scared because I just went through a miscarraige in September . The doc said those levels were normal because it was 4 days before my missed period . Is that ok ? Also I was taking pregestorone l inserts and I skipped it this morning because I thought I wasn't pregnant but I just took it can that hurt ? Thank you !!!