Your body and neck needs massage. The pain may be because of stress, repetitive movements, try this, turned your head in one direction and then gently rub the neck. Repeat the same turning your head on the other side. Use tips of your fingers to make small circles around the neck which will result in good neck massage.
Hey! At one time, when I was very active in jogging, my back and neck also ached very often. I couldn't do anything about it for quite a long time, but then I came across this article: https://advancedmassager.com/massage...pros-and-cons/
Through this article I learned about the pros and cons of massage for runners and after that I also used some of the massage techniques from this site and my back pain disappeared!