the mode of injury
you told may be serious one.
but as you are having little pain and stiffness
you may not have serious injury.
to determine the exact injury and its extent examination and some basic investigation is needed.
icing to the affected part is good.
you can take common analgesics for 3/5 days.
you should take rest also.
so after 5 days if it doesn't decrease or worsened consult an orthopedic doctor.
good luck.get well soon.