Watched kettle never boils... the drop of hormones would have told your body it's time to shed the lining and spotting is a sign it got the message. It's only a matter of time, don't worry. Your AF is likely to only last 1-2 days anyway and they'll be able to see everything on the scan tomorrow so don't worry 😉
Karen, my viability scan is tomorrow afternoon, at which point I would be 6 + 7. I know I'm definitely pregnant as I have lots of symptoms, including nausea, but I'm still terrified. A friend has offered to come with me and I don't know what to say, I would love to have someone to see the little heartbeat but if it's bad news I'll be a real mess.