Mine was nearly a week, though I was told by the receptionist when I'd expect a phonecall which was helpful. My friend did the same as you as she hoped for a scan at 6 weeks. It totally backfired as they have scan equipment there and it was free, so they did it there and then and it showed she was 5 weeks (which she knew)! Quite a few ladies who have had previous losses on here seem to have been offered an early NHS scan, maybe share your concerns and see if this is possible. Fingers crossed for you.