Physicians will usually tell pregnant women that if they were active before pregnancy, they should experience no problems maintaining that level of activity throughout the pregnancy. There have been women who have successfully remained very active all the way through the the third trimester. Do some research in the IDEA article library for more information on this topic.
The only answer that should be acceptable for you in this instance is one that comes straight from your client’s physician! There are so many different factors that go into creating prenatal and postnatal programs. I feel comfortable saying that if I had a client who was pregnant, I would suggest she look into mind-body fitness, yoga, something of that nature. From a psychology standpoint, I’m a big supporter of lessening stress in expectant mothers. That’s just me, though.
Final answer: This is one for your client’s physician! Getting the physician’s approval and advice is not an option!