Hello Friend, Good that you are seeking a help here. As you are doings a IT, I can understand your concerns. You  sitting posture, work/life balance issues, work pressure etc can be a reason for such pains. You need to adopt certain stress management plans that you can follow practically like, few lifestyle routines change, self therapies or excersise, dietary changes etc. As I do come from IT background, can guide you on the suitable non medicine solution plan that you can follow in your daily lifestyle to overcome this problems.

U have developed Psy issues..u need to see a psychotherapist asap..u may contact me on nine seven nine five three four five six seven eight

Visit a GP and get diagnosed. If there is nothing, then, you can Consult a psychologist.