No problems - there most definitely is hope for you, especially being so early and even if your dates are out by a day or two (or more!) then it can make all the difference. I have had a scan at six weeks and they couldn't see the heartbeat yet, they offered me a transvaginal scan in order to help see if there was one already but I didn't end up having one. In fact now I think about it, each early scan I have had, from 5.5 - 6 weeks have all had no heartbeat detected.