Is there a sense of urgency?

I'm at just over 6 weeks. Found out I was pregnant while on vacation, so I didn't call doctor's office until Monday as I was returning. They called in a blood test order immediately. They've been calling me 2-3 times a day to see if I've done the test yet because they haven't received the labwork yet. Keep in mind I was still out of town and told them that. Before Monday, I had had zero sense of urgency, and that I wouldn't need to do anything until 8-10 weeks (previous doctor said this). Anyone know why they seem to have wanted this labwork last month (okay, I'm exaggerating... slightly)? I've gotten no explanation.