Frequent Stuttering due to Pregnancy

Frequent Stuttering due to Pregnancy My wife and I are expecting our first child - she's due this summer. However since her pregnancy, my wife has been stuttering more. My wife was born in Mexico with not a lot of money and resources - she didn't have a proper speech therapist growing up and she was stuttering since she was 5. She told me it went away sometime after high school - but it comes in cycle. Also, she stutters more in her native Spanish and when she speaks English or some Polish (I'm Polish) her stutter is less noticeable. However, she is 5 months pregnant and her stutter is pretty severe - she suspects it's because of her breathing (she also has asthma) and possibly some stress because of the pregnancy. Is it common for someone to stutter more due to pregnancy - if so does anyone have any advice how to lessen it?