Screening advice needed

Hi all, I’m UK based and 13 weeks pregnant with my first I’m 38 years old

I had my scan and bloods done last week, my midwife has called today to say because of my age I’m high risk for Down’s syndrome. I asked her was anything detected on the scan or blood and she said no it’s just because of my age, all women over 35 are pretty much high risk (I also have a high BMI but she didn’t mention this)

I’m going for another blood test tomo that will be sent off and tested more accurately.

Has anyone had this before? Should I be worried because I am very stressed out about it 😬

Help needed xx