Acupuncture pain

After a traffic accident, I was receiving treatment at an orthopedic clinic, but I found injections burdensome, so I transferred to a Korean medicine clinic.

So, I went to the Korean medicine clinic about twice a week to receive acupuncture, moxibustion, and herbal medicine prescriptions.

I received both acupuncture and herbal acupuncture.

However, one day I experienced pain after getting acupuncture, and it became more painful at night.

What is the reason for this pain, and is it okay?