I had a injury several years ago that left me with a bad back/neck so I have been going to the chiropractor
my whole pregnancy and plan to continue to go throughout. Even if my back didn't hurt I would be going in to make sure my body is aligned and ready for baby to arrive.
The baby turning into the correct position isn't the only perk from being adjusted. Keeping your body properly aligned can make delivery easier for both you and baby. *If your pelvis is out of place it can make it more difficult for baby to get through.
Each person is different on how often they need/want to be adjusted. In the beginning I went once a month and I just now started going once every 2-3 weeks.