Hello! Found out I'm pregnant on Friday and counting from first day of my last period, I think I'm 4+4. I'm a paranoid type, so I'd be willing to pay for an early scan to put my mind at rest. When's the best time to do this? 6 weeks? 8 weeks? And does anyone have any recommendations in London? I've seen the Fetal Medicine Centre on Harley St mentioned in a previous thread from a few years ago - has anyone been there? Thanks!