BFP but scared!

I got my BFP at 10DPO. I've been TTC for baby #1 for 6 months and have never had a positive test. AF is due December 30 and although I got BFP(I've tested a lot) I am still nervous AF will show up. I hear a lot about chemical pregnancies. I'm calling my doctor tomorrow for blood test. Hopefully with a positive blood test I'll feel better. Does anybody else feel this way??