Hello, during my rugby game today I hit someone and hit the back of my head on the ground. For a few seconds I was days but I did not lose any consciousness when I got up my vision was crossed for maybe 30 seconds after I saw a little bit of stars my trainers took me to the side that and evaluated me and I had no other symptoms of a concussion and I play the rest of the game. About the end of the game I threw up a few times but I also didn t eat before my game . And that has happened to me before and I thrown up but I don t know if this time is because I hit my head or just because I didn t eat anything. And now I plan to go out tonight with my friends and I may drink a little bit maybe. But I will most likely smoke tonight and would like to know if I can. I didn t feel that bad after the hit but sat out for a few mins to play it safe