LL, don't beat yourself up, kids can be little bugger's at times. Just have a brew, give lots of cuddles, I promise she'd have forgotten about it in less than 5 minutes.
Heron I seem to be quite odd in the way of getting a very pregnant belly very quickly (I was 6 weeks with DS2 but people thought I was more like 5/6 months, and with the MC I had a load of shite with the mums in the playground because they all kept going on about it, when I had already lost it, I am a size 12, woke up one day and couldn't do my old size 18's up!), so I think I will just make out that I can't remember my last AF or something, I guess with the bump they would think I was further on than 6 weeks so would give me a dating scan to find out. I wouldn't like to say I was bleeding because at 6 weeks it is very likely to be an internal scan and they would know, I think, if I wasn't/hadn't had any bleeding.