Two days until first appointment!

It's been about 3 weeks since my BFP and my first appointment is in 2 days. I cannot stop thinking about it because I'm so worried the baby might not have a heartbeat or something. I already got blood work and urine taken like 2 weeks ago but they never called me back to tell me anything so I'm assuming it was okay? I still have symptoms and stuff but I am just going crazy over here... I need to pass the time but it's so cold outside and I can't go anywhere :(