Hello, my name is cathy

Me and my brother was playing earlier on in the day, his hand accidentally pushed my head into the walk as he was trying to hold onto me instead of falling. The push wasn't that hard, for me to knock out. I was able to still walk around, see clear and stay awake. It hurt for about 15 minutes at first, then it calmed down ; as soon as I got home, it started up again. I want to sleep so bad but scared to do so. Should I have anything to worry about ??