Nervous about testing at the hospital

My toddler has to get an ultrasound of his bladder bit I just found out is going to be done at the hospital. We have been really serious about the pandemic and have been isolated for almost a year now doing everything we are supposed to to not this this virus and spread it. I'm really worried about going to the hospital with him . He's good about wearing a mask and I just ordered a face shield but I'm honestly so nervous still. Everytime I go out we have anti maskers and people being gross or not following the rules. I just don't know how else to ease my mind. We can be as safe as possible but I can't control others and the hospital is so full with covid right now . The ultrasound isn't urgent but does need to be done so there's no getting out of it. :( I'm so worried