Airport millimeter wave scanners

Kayla
I'm 16 weeks Prego, and I'll be flying out this week. Trying to decide if I'm going to opt out of the scanner and get the pat down. I've heard both sides. Last time I flew, in my first trimester, My husband was concerned and had me opt out of the scanners and I got the pat down. But it was a long tedious process and much more stressful, we even got there way early. We still barely made it to our plane, they were in final boarding stage. Just curious of what you do when you fly, do you opt out or do you go through the millimeter wave scanner?