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19 out of 20 found this helpful. Bending over will not hurt you unborn baby. I worked out through my 41st week of pregnancy with my daughter and everything was fine. (I think I had an easier labor because I was limber.) You do need to be careful not to fall while pregnant.
Most babies can roll over by the time they are six months. If your baby is not rolling over, at least from front to back, by the time he is six months you should discuss this with your doctor. If he is reaching other developmental milestones and is finding other ways to get around like scooting or crawling, this may be nothing to worry about.