Hi V.. You sound like my kind of person: drug free, birth advocate, into prevention rather than medication, etc. (My son was born at home!) :)
A friend of mine is a chiropractor in Burnsville. His name is Dave Phillips and he went to school for upper cervical chiropractic at Palmer. You'll have to wait until after your pregnancy to see him because the technique he uses requires x-rays. (Upper Cervical chiropractic is based on aligning your atlas-- the 2 oz. bone that supports our 9-13 pound head-- so that the rest of your spine will straighten out.) He also happens to be a birth advocate and into everything natural. We have learned a lot from him! He is the one who recommended Spiritual Midwifery to me (by Ina May Gaskin) and I just loaned him my book The Thinking Woman's Guide to a Better Birth by Henci Goer. He did a check on our child when he was a couple weeks old and he also checked me. (The child needs no adjustment, but mama is another story!)
His e-mail is ____@____.com make a short story long, when I was pregnant I went to get my sacrum pushed back into place by a chiropractor that doesn't take x-rays usually. Just this week I finally went to see an upper cervical chiropractor in Mankato and I SAW proof that it works! I had one leg that was "shorter" than the other, or rather, being pulled up by muscles because of my misaligned spine. The chiro took a digital picture of my feet before and after. Wow, what a difference!
Anyway, I just thought I'd share that with you so you would be aware of the whole upper cervical method of study. That way you can decide what technique is best for you and if the others don't work, you can try this.