Did I just strain my shoulder or something more serious?

so im an idiot and i was l climbing a ladder into the attic and when i was coming down back on the ladder i heard a pop in my shoulder. The pain was intense but got a little better know but it still hurts to move like im typing and using my mouse with my left hand. this is probably just a strain right im worried?

Did I just strain my shoulder or something more serious?
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