Consults a doctor.
Depends on how hard you hit it.
did you hit your head? ....
If you hit your head and are still experiencing pain after four days, it's important to seek medical attention. Persistent pain could indicate a concussion or other injury that needs evaluation. Additionally, watch for any worsening symptoms such as dizziness, confusion, or nausea, and seek help if these occur. It's always better to err on the side of caution with head injuries.
if you head your head on somthing quite hard: say your child get hit in the head with a rock-make sure they can stay awake for atleast for 45 min if they can;t it would be a good idea to take them imedintly to the hospital.
I suggest you go see a doctor as soon as possible. You might get a concussion.
Never hurts to go to the doctor with a head injury.
When you hit your finger with a hammer that hurts a lot.
A concussion
If you got hit in your kidney area and it hurts you may have bruised it. If it really hurts you may have internal bleeding.
being a male, i can tell you that even a slap (to the balls) can hurt very badly... its not the penis that hurts when it gets hit its the balls.... and yes it hurts a lot... probably more than if a girl would get punched in the breast
Head injuries may sometimes be associated with neck injuries because the neck and head are connected.
They pat down mud when they make dams and are a good sense of protection; if they hit you in the head with it, that HURTS!!!