alexbellamy, I'm assuming you've never felt the weight of one of those doors. If you had, you'd know the risks, not only to the baby in the event of the door swinging in but also to the expectant Mother who would very likely land herself with a serious back injury trying to throw the door out. There is a good reason that pregnant ladies are advised not to lift heavy weights. (Ligaments soften in preparation for birth)

As for suggesting that the lady should be fine as long as she isn't sitting in the A or F seat, maybe you should have a read of this thread.
http://www.flyertalk.com/forum/briti...ng-course.html

scubainstructor87, you would be moved from an emergency exit at 7 months pregnant, I'm afraid. Swiss Tony is totally correct on the rules, so for this flight, you will need to choose a different seat. I hope you have a great flight regardless and congratulations and good luck with your new arrival!