Full disclosure: I used to do business consulting for Doctors of Chiropractic. Yes, I'm biased. All of the following is just my opinion; take it for what it's worth.
Chiropractors are (generally) divided into two groups:
Straights -- who do only adjustments to align your bones. They rely on your re-balanced body to fix the rest of what's going-on.
Mixers -- both adjust AND employ other modalities (therapies) to bring about healing. Massage, traction, electric stimulation (Think TENS, but more aggressive) etc.
If what's troubling you enough to visit a Doctor of Chiropractic has been bothering you for months or years ... it's not fair to expect one visit to a Chiropractor to fix you. "One shot wonders" are a rarity; don't keep your expectation "bar" that high.
If they try to sign you up for their long-term treatment plan on your first visit ... leave. IMO, these guys are more interested in locking you in to their "Daughter's College Fund" than they are in helping you. (You very well *may* have a chronic condition, requiring monthly or 2X-a-month treatments, but if they put the sales pressure on you that first visit, I wouldn't go for that.)
I'll stop now.