Blood work?

Br

Hey ladies so I need some advice I have had 2 MMC my first was at 22 in 2016 made it to 5 weeks my last was just this past August made it to 6 weeks 3 days. I have had 2 normal cycles since my last MC and just got my BFP. My doc has never done bloodwork just straight to the ultrasound. This time should I push for a blood test? Am I now considered a high risk pregnancy?