Need Some Advice

Okay, here's the deal: Off and on since we've been expecting little M the dogs have been relieving themselves the house. We aren't sure if it is one or both dogs, but we are getting rather annoyed by the repeat occurrences. D has threatened to get rid of the guilty culprit, but I am rather hesitant. Other than the messing, we have great dogs that we both love very much.

I did a little research to see if the accidents were related to pregnancy. What I discovered was not too surprising to me. Dogs have a very acute sense of smell and can smell the different hormones that a pregnant woman produces. It is not unusual for dogs (and other pets) to behave differently when a family is expecting. The behavior may vary from remoteness, overprotectiveness, behavioral changes (such as accidents), etc.

Do dogs (and other pets) sometimes see a pregnant woman and/or the unborn child as a threat or do they simply sense change and feel the need to react? Regardless, does anyone have any practical advice for us on how to stop this unacceptable behavior? I desperately want to introduce our new baby into our home with acceptance from all our pets.