hey ladies! welcome livened - good luck with the scan. It's soooo exciting - I really loved it. Still not sure it's sunk in that I'm going to be producing a real human person at the end of it all though 
I'm 13 weeks today (dates revised after scan) and have now told both sets of parents, siblings, friends, work, and my hockey team. So relieved to get it out of the way and I'm finding telling people easier as time goes on. I've just been sort of blurting it out until now! My boss was great and has promised to look after the process and educate our colleagues about mat leave rights. I do still need to tell a few non-local friends and the rest of my colleagues but the pressure has gone a bit now that all family know and there aren't going to be any accidental facebook revelations (thanks to whoever posted above with the turning off fb wall procedure; was a great idea)
capy I haven't been though this but have read a lot about it on MN, font of all wisdom, and consensus seems to be that small amounts of dark blood are common if not strictly normal. Maybe you could call the MW? There's always a chance they might bump up your scan? I did have a very light, quite red, bleed at around 5 or 6 weeks which (frankly) was after sex and probably just my body adjusting. Haven't had a problem since. I didn't do anything about that as it stopped within about 18 hours.