Trans vaginal ultra sound scans

Has anyone had one at between 5 and 9 weeks and there baby has survived. After my last miscarriage I'm worried and would like a scan done early (I'm 5+1) but worried as I've heard it could cause miscarriage. I'd like to know people's experiences with these please. Anxious mum needing reassurance, this is my 6th pregnancy but will be my 3rd child