i crashed on my fixed gear (bicycle), whats wrong with me?

[EJ253]

so i was riding around with a few friends today, and i fell messing around. i guess i fell on my head i dont remember that.
i woke up with ems people all around me, i was told i was out for 5-10 minutes. they asked me a few simple questions, most of which i answered correctly, but it was somewhat difficult (pres of USA, what day it was, ect)

they said i was good enough that i could choice if i wanted to go to the hospital or not. i decided just to head home.
i have a noticable headache and my eyes hurt a little bit to be open. i feel concious. but idk.

so my friends and i got home,
my head still hurts and i just cant stop thinking if i have a concusion



CC i've never had a concusion and i dont want to fall asleep and not wake up


thanks
Greg