I think it's a postcode lottery sometimes. I've had scans at 5 weeks, 6, 8 and ten with previous pregnancy through bleeding with no pain. This one a scan at 5 weeks due to severe pain on left side that I thought was eptopic but turned out to be a corpeus luptum cyst. Personally I beleieve if there is either blood or pain they should offer a scan as even at 5 weeks as eptopic can be found then. Just my personal opinion but everyone is different.