1st appointment

Sydney

So I called to schedule my 1st appointment. The receptionist asked when my last period started and everything and said they like to wait until you’re 6-8 weeks along for your first appointment because that’s when they can see a heartbeat. But she scheduled my appointment when I’ll be 5 weeks and 4 days (according to Glow). Will they be able to see anything? If not will they reschedule me again soon after? This is my first so I have no idea how it works. Thanks. 🙂