Baby 2

So I’m wondering if this is normal I went to a new OB today and was tested to confirm my pregnancy. pregnancy confirmed! So then she does a vaginal Sonogram prints them but keeps them. The Dino showed the sac which she said at 4-5 weeks is normal but told me to come back in 2 weeks to listen for heart beat and take blood? I’m like 🤔 I’m pretty sure with baby 1 they took blood at the first appointment and listened for a heart beat. Anyone care to share their experience