So tonight I was out drinking with some friends, it's beenpnths since my initial concussion so I've been drinking recently without any substantial problems. While I was drunk me and my mate were messing around and he shoved me two or three times jokingly. These were decently hard shoves and one of them cause me to stumble back into a wall. They weren't ridiculously violent, but decently so, and I didn't not hit my head at all. I feel dizzy/lightheaded and whatnot now but I aril haven't slept and I'm sure it's mainly from the drinking and lack of food. Could I have gotten a concussion from this? Will I be alright? Should I stop drinking/smoking? I quite alarmed any advice would help, thank you