X-rays and QV scan while pregnant

Hi Mumma's.
Just wondering if any Mums out there have had x-rays and/or a QV scans while pregnant?
I'm currently 5 weeks pregnant and went to the hospital for chest pain and the doctor got me to do a chest x-ray (I did wear one of those belly shilds during the x-ray) and the results come back showing I have a chest infection, so now on antibiotics for that. Then a day later he rang and wanted me to do a QV scan to check for any blood clots etc. (I did let everyone that I dealt with know I am pregnant).
They said that the QV scan was the safest option for pregnancy and that they only gave me half the does of the radiation that a non pregnant woman would get.
I am mentally not coping with the worry I have that my baby is not going to be ok with all that radiation.
Is there any mums that have had this done while pregnant and baby went on to be ok??
My doctor keeps telling me not to stress and that I have to take it day by day, but I am just so worried that I have put my baby in so much danger. I just want my baby to be ok! I am a complete mess.