Early scan

Hey, I have an early reassurance scan booked tomorrow my last period was 7 weeks ago now and I have been getting faint lines not bold lines so I want to confirm I am actually pregnant as I am fed up of doing tests and them being faint and plus I would rather spend a bit more and get actual confirmation from a scan! However I am a little worried if they tell me I am not pregnant I will feel so embarrassed!! Has anyone had similar and it was confirmed at a scan?