That's the problem with chiropractors and chiropractic - experiences tend to be pretty binary. They are either really good or absolutely horrible.
Mine was on the plus side: lower back and sciatica pain got to the point that I couldn't walk, sit, or lie down without pain. It finally got so bad that I couldn't stand it any longer, and the ibuprofen stopped being effective. Against the advice of my ex-wife, I went to a chiropractor, and inside of two weeks I could sleep without pain, inside of a month could walk and sit without pain, and inside of six weeks start playing basketball again. Still good to this day, 30 years later.
My advice: do your research, look for referrals, and don't stick with anyone who tells you chiropractic can diagnose, prevent, or cure cancer. Caveat emptor.