Can I get hiv through this. On the same!

I wanted to know suppose how long the vaginal fluid will remain outside the body I mean in ultrasound prob.. I heard that hiv once contact in air it dies is that real or fake Last time also I asked the same question  I went to doc on 19 June 2019 Bcz I was pregnant and I don't wanted to continue that pregnancy Bcz I already have one son 11 month old when I went to hospital she done vaginal ultrasound and she not covered that with condom and when I asked why it is not covered so she said that it is sterilized so Jo need to worry and when I seen that prob it was clean only even i wanted to know is there any chance to get hiv in this way and I went after 45 Mins in that ultrasound room till that no one enter in that room I wanted to know any chance of getting hiv through this way. The hospital staff said it is sterilized but I have doubt on the same