Go & see a properly qualified Osteopath, Physio or Chiropractor who is recommended by people in your area. They should have a plausible explanation about what has happened & what they propose to do about it. If it’s not improving in 3-4 treatments seek a second opinion. If they say the disc has slipped out & they are going to put it back in leave without paying – it doesn’t work like that.
@Richc – the majority of those suffering back pain gain nothing other than a dose of ionising radiation by having an x-ray as the problems tend not to be boney and therefore don’t show up (unless there is a history of major trauma or suggestive of cancer). Historically X-rays were used as a sales tool by Chiropractors as much as diagnosic tols.
@Dr death – randomised double blind trails are difficult with physical medicine. Having said that there needs to be more research done (as ever….). IME physiotherapy on the NHS tends to be very protocol driven, which would be fine if thinks such as ‘back pain’ are uniform entities. They are not, so I believe a more personalised treatment plan is better – but then I would, I’m an Osteopath.