Cheating husband while wife is pregnant

Ok. I am alarmingly hormonal and seeking some reassurance. I read an article that said men MOST OFTEN cheat while their wives are pregnant or within a year of their child being born.
What the fuck?? That can't be true? Tell me that's not true. 
For the record, I have a really fantastic husband -- but I'm just having a ton of anxiety while pregnant in general and that article made me want to cry - for all the wives!!