afaik "chiropractor" is another name for osteopath. Osteopaths are highly-trained (4 years full-time, 5 part-time here in UK) and regulated and only practice after extensive training in anatomy and neurology. I used to make welded-steel sculptures. Imagine what that did to the spine of a 5'4" woman hefting I-beam sections round a studio 10 hours a day? My osteopath in London used to have me straight again in two treatments on the frequent occasions when I was carried there (no exaggeration).
Though I now live 70 miles north-east of London I recently started another course of treatments.......this time for chronic back stress gathered over years in an emotionally-pressured environment. This chronic complaint......which caused stiff painful hips, knees, ankles, wrists, lower back, combined with the fact I'm 15 years older......is taking longer.
It is a costly treatment and the length depends on whether its chronic or acute (yours sounds acute, therefore quite quickly resolved). In my experience it does work. I am so impressed I'm contemplating undertaking the training myself to have a new skill to move forward with when I retire from present work in 3 years time.
Google to find out more as there are "national" trainings in most countries (but not, I think, yet in Ireland!).
Physiotherapy? I've been referred on one occasion by my G.P. after a road traffic accident. It's NHS. I didn't see the same practitioner twice in a row. None of the three people who manipulated me (and that's what it felt like!!!) seemed to give a toss how much pain, or what results. I did not find the experience useful or illuminating and only three sessions were available after a month-long wait.
That's my tuppence worth. Never ignore back pain. It doesn't sort itself and may be serious.