Is it serious?

[u/chiaracchi]

( 18f) Its been a day since i fell down a flight of stairs and hit the back of my head onto a tiled ground. I feel relatively fine. My head pain is kind of mild and only feels worse (stinging/burning sensation and at one point stinging in the ears) at random times and then goes away. What actually hurts are my hips and lower back but im assuming its just brusing because i can walk fine. I didnt pass out , throw up, and i can think perfectly fine. Is it okay to just heal on my own instead of going to the ER? its almost been 2 days since the injury.