When did you first have bloodwork done for pregnancy?

Emma

My first ob visit was scheduled for 9 weeks, but I called to switch my appt to 8 weeks so I could get an ultrasound/confirmation of pregnancy and tell my family with a little more confidence. When I went at 8 weeks, they just did an ultrasound, no blood work. The doctor did the ultrasound and told me we won’t do the blood work until my next appt (week 10 or 11) because it was too soon. Is that normal? She said the heartbeat was normal and the baby measured the right size but I’m worried she saw something that made her think this pregnancy wont last so she didn’t want to waste the blood work? Am I over thinking?