Neck / Shoulder pain. D3 tab in a week.

I am having neck and shoulder(left) pain from past 20 days and undergoing a medication right now and diagonsed with Cervical Spondylitis. Currently i dont having any major pain on my neck(having only mild pain), but my left shoulder is paining a lot, especially while doing a rotational movement. Just to let you know that previously i was doing workout from past 3 months, but now not doing anything. I don't think its because of heavy lifting, not sure though. In brief, neck seems to be ok but doesn't see any recovery on shoulder esp while doing rotation movement. Attaching xray and medical report. Let me know if i need do xray/mri for shoulder or is it related with neck and may take time to heal. Currently, only taking ubisure daily and vitamin d3 tab in a week.