2 NHS doctors on two separate occasions told me to stop going to a chiropractor. I see you are in the uk .i think youll find its not something they go along with.
As a result of all the pressing and pulling on my upper back , it resulted in muscle spasms and my body went into shock .i was sleeping or trying to, in the chair for 3 nights, unable to get into bed.i couldnt drive or turn my neck .the whole episode lasted about 12 weeks.Not only that the wallett was getting lighter and lighter.
it an experience i will never forget and never repeat,in the end i had physio at the local hospital which of course is free.