Are you feeling it more on your spine? If it’s more around the outside area I’d suggest seeing a genuine Osteopath, they do help.
I went to see a physiotherapist after my accident back in 2018 and he used something called a TENS machine. It made such a difference after one day. I ended up getting one from Lloyds Pharmacy it made a difference here and there, primarily alot due to seating position in the car. Only problem with TENS is you cannot apply it onto the spine due to nerves.
Later down the line I realised I had a long term issue something called Spondyloarthiritis so sadly I am on injections. I did see an Osteopath so i’d recommend them. Chiropractitioners can be a bit harsh, depends how you take it. This is from my experience.