Hi there ~
At the 7-8th month of pregnancy
there is some loosening of the stomach. This is no cause of concern. In fact it may progress to difficulty in breathing as the uterus
demands more space for growth. I do not think that this is something you need to be worried about at all. If your wife is having regular contractions that are getting worse by the day, you need to see an obstetrician. I hope this helps. Take care and have a lovely day !