First off, congratulations! I'm sorry to hear your back has been bothering you, but chiropractic is fantastic for pregnant women. When your body goes through all the changes it does during pregnancy, it causes a new stress on the low back and hips in particular. Chiropractors are great at helping your body adapt to these changes and is no risk to the baby at all.
There is another benefit for having regular chiropractic treatment during pregnancy, shorter labor time and easier delivery. I have treated dozens of expectant mothers all the way until delivery. The ones that had children before without chiropractic were amazed and commented that it was like night and day compared to the first. I remember one patient who was having regular treatments that I saw on a Monday and scheduled her back on Wednesday, she called and canceled because she was on her way to the hospital to give birth.
Congratulations. Babies and small children also benefit from chiropractic.
Hope you start feel better soon,
Bernard Olson, D.C.