I think that's the right way to go Mum2bewaiting - it was hard waiting for our 12 weeks scan, but when we had it it was so special. We saw an actual baby and a heartbeat. Baby was flipping about everywhere and the scan was so clear. I was anxious before we had it, with being my first as well, and of course I worried about what we would see, and if everything would be okay. But I think if I had an earlier scan and there was no heartbeat, or the baby was measuring too small for dates...which happens in perfectly healthy pregnancies, then I would have put myself under way too much stress and worry, which in the long run is not good for baby. Also, you cannot change any outcome - and I think if it was better to have scans before 12 weeks, then that would be the norm in the NHS.
Again - just my opinion. I understand the anxious wait and the feelings you get in those 12 weeks as I have been there. But I think the high potential for undue worry outweighs the wait.