mummyfirsttime I had the most horrific dreams early on - horribly graphic and lots of blood and took me some time to work out when I woke up whether it had really happened or not. Really horrible, but they seem to have passed now.
I also had the most appalling 'stabbing'/ cramping pains on the right side of my abdomen too - the first time it happened I woke up screaming out to dp 'it's happening, I'm miscarrying, I knew this was going to happen!', and when they'd happen during the day they just completely took my breath away and stopped me in my tracks no matter what I was doing. I found the NHS to be pretty unsympathetic really. I was at about your dates and everyone (I went to GP and even A&E when the pain got particularly bad) basically said 'if you're going to miscarry you'll miscarry, that's it' and they refused to scan unless I'd bled.
Anyway, desperate, I went for a private scan at what I was sure was 6 weeks, and they saw sack and yolk but no 'fetal pole', even when tried internally, and concluded either my dates were wrong (they'd have to have been very wrong as I thought I was 6 weeks at the very, very least) or I was having a 'struggling' or 'blighted' pregnancy. Pretty awful times, DP tried to focus me on 'our dates could be wrong' but I was devastated. Anyway, went back a week later and was dated then as 6+3 and saw a HEARTBEAT! Absolutely amazing!
I'm now 9+3 and still a nervous wreck, though the appalling morning sickness that kicked in a week 6 provides a bit of reassurance, and I'm nowhere near as bad as I was - the pain has completely gone (I think it must having been the 'stretching' etc that people talk about and I never believed applied to me as I thought too early) and the nightmares are much rarer and less horrible now. My next scan is next Friday (Friday 13th, yuck!) and is my NHS '12 week scan' - I've told my midwife this might be a bit early but didn't press the point as definitely couldn't wait an extra two weeks to check all's well again! The private sonographer also said it can be quite difficult to date so early on as she saw me, so I may well be further on now than I think (which would be flipping amazing - I'm living and breathing for the 12 weeks landmark!)
Anyway, sorry for such a long post, just thought I should let you know sometimes things can look bad (dp's starting worrying about having a baby seemed completely foreign to me so convinced was I it was going to go wrong) and they can't see what they 'should' on a scan, but then in a week a world of change can occur - there also seems to be so much variety - apparently you 'should' see a hb at 6 weeks but for some people there appears to be none until 8 or 9!
Good luck and let us know how it goes! x