Am I alright or is it serious?

So recently I've been getting random aches in my hand and left arm. In addition to this my hamstring randomly felt tight/sore for a day and is getting better but I can still feel some discomfort but this all happened out of no where, and i did not work out before this occured. i am wondering should I go get this checked out... Could this be related tl my upper/lower back and I'm 20 by the way
Am I alright or is it serious?
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