Possible miscarriage?

Demi • Baby #1 is now 3 & my best friend. Baby #2 is baking in my tummy 😻
I had a faint bfp on a clear blue and a very positive clear blue test so I decided to take a digital but it was negative. I never tested with a digital with my son either but has this happened it anyone? I should be 10 weeks and I'm going to my doctor for a quantitive blood test next week.