I did. I had already been seeing him for years before I first fell pg and continued seeing him through all 4 of mine. I found it to be really beneficial as he could adjust my back to counteract the changes that pg was doing to my posture etc as well as my regular adjustments. The only trouble is, if you have never seen one before you wont already have x-rays done and they ideally need to have x-rays so they can see what is going on, whether you have any disc issues etc. The thing with Chiro is, that other professions get a bit snakey about you using a chiro instead of just being happy with what they are offering you kwim? So your physio could just be protecting their own interests. I see Chiro as being complimentary to massage and other therapies and visa versa. There is no point having a massage or physio for an hr if your spine is out of alignment pulling all the muscles back out again kwim? Just as it is to have chiro when the tight muscles pull the spine out again etc. In your situation, it is certainly worth a shot if it will save you even the smallest amount of pain or discomfort.