Early scan

Samantha
Hi, just wondered when the best time would be to have an early scan. The doctors won't do one for me. I had a missed miscarriage in December, went for my 12 week scan and they told me that the baby stopped growing at they told me about 8 weeks and has no heart beat, so for reassurance I want an early scan. I'm currently 5 weeks, I've booked a scan for 9th July I would be about 6 weeks now, booked it purely so I didn't loose the date. What would people suggest? Photo attached is my scan from the last pregnancy