Welcome to HealthcareMagic
You are a young chap so need not to worry a lot, its just a little muscular sprain
(what we call in our medical terms as MYALGIA
) that usually appears if you over exert your muscle and not give them proper rest that they need. So just give a bit of rest to your muscles and apply hot frementation. These things will surly help you in over comming your problems.
Get well soon
do get back to me for any other query at firstname.lastname@example.org
Dr. Harsh Rai