shoulder pain

Dear Donkey's Ear

I am an university student. I finished a military service 3 months ago.
I exercise regularly in a gym.

One day, I felt pain in my left shoulder. At first I thought that it was temporary pain.
But the pain continued all day. So I don't exercise, I have a lot of problems
I think reason _____ that I was in a military, I always sling a rifle on a left shoulder.
It effects my left shoulder.

I feel inconvinience in daily life. I don't know how to cure my shoulder.
Please help me

Shoulder patient in Boston

Dear Shoulder Patient,

Thank you for posting. Please note the following changes:

• There is a ______ where there is a missing article ("a" or "the") or words missing
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• incorrect prepositions are highlighted in blue
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• incorrect spellings are highlighted in green