Is my baby okay😥?

I went to my 20 week scan yesterday? I found out it’s a boy! But something didn’t feel right when I saw the ultrasound pictures. My sons first pictures didn’t look like this and it didn’t help that I went on google to search ultrasounds with confirmed diagnosis. They don’t look that different. My 13 week scan and blood screening went fine but something doesn’t feel right. Am I overreacting?