Congrats on your BFP Candi! I didn't have any symptoms with Jacob until 7w on the knocker, and with this PG (I'm now almost 22w) until 6w. So yep, not having any symptoms can be totally normal!!!

The best time to get a scan is like Kirsty said - around the 6 - 7w mark. I had a scan with Jacob at 6w and saw the tiniest of tiny little beans in there......my OB told me at the time that the heart starts beating at around 5w3.5d (yes, he was that specific LOL) but in case your dates may be a bit wrong, it's definitely better to wait until 6 - 7w so that you don't get stressed if you don't see anything right away IYKWIM?