Is airport body scanner safe

Hi mummies, I just came back from my trip to Seoul and I'm feeling a bit worried. I walked through the full-body airport scanner in incheon airport (the one where you raise your arms), not the metal detector. The scanner has two tall pannels on either side and u stand in the middle with arms raised. My husband told them that I’m pregnant, and they actually asked me to just walk through the scanner. But I was so confuse at that moment that I ended up going through it with my hands up, so I think I completed the full scan. Has anyone travelled during the first trimester and gone through this type of scanner? I'm worried because I’m afraid the scanner might emit radiation.