Just great

I banged my head on this metal spiral staircase there is outside where I live (ie. cycled underneath a curve of it and didn't duck away enough) just as I was going to Sainsbury's and think I may have been feeling hints of nausea on the whole trip, and now that I'm back I feel tired. I'm fairly certain I'm just tired, but know I'm not allowed a nap with a head bang/possible injury so am going to have to keep myself awake until my proper bedtime. Why is none of my Coke cold yet... *whinge*

PS. Does anyone know what you're actually meant to do with a possible concussion? Google's giving me nothing apart from 'find a doctor if it seems bad'.

ETA: I'm OK! Went to A&E and apparently gave myself a mild concussion, but am staying overnight with a friend overnight and should be fine!