Sort answer, not bad for the baby. It is such a low dose of radiation and pretty much the equivalent of taking a flight. However, it depends on the pregnancy really, and if it is a necessary x-ray.

Not so early. I went to the dentist when I was in my last trimester and they didn't just put protective stuff over you

I wouldn't do it if she doesn't have to. I remember at the dentist they didn't do any X-rays when I was pregnant