Tests: I was in a similar boat to you for this pregnancy. I didn't go in to see my OB until week 11, so my normal GP organised the blood test part of the NT test. My GP also did a blood test at around 7 weeks when I went in for a pregnancy confirmation just to test vitamins, iron, general health etc.

Scans: I don't have regular periods, so I needed a dating scan to get an idea of how far along I was. I had this at around 5 weeks at the same time I was put in hospital in London for dehydration due to continual vomiting (another story!).

The second scan as part of the NT test my OB organised at 12 weeks.

I hope it all goes smoothly!