Thanks for your question on Healthcare Magic.
I can understand your concern.
In my opinion, possibility of
musculoskeletal pain is more.
So better to follow these steps for better symptomatic relief.
1. Avoid heavyweight lifting and strenuous exercise.
2. Avoid movements causing pain.
3. Avoid bad postures in sleep.
4. Apply warm water pad on affected areas.
5. Take combination of painkiller and
muscle relaxant drugs.
Don't worry, you will be alright with all these in 1 week.
If after 1 week still note improving then consult orthopedic doctor and get done
x ray of shoulder and arm till rule out internal pathology.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.