Head Hit Hard On Concrete, Felt Dizzy. Bruises On Face, Headaches, Nausea. Relief From Tylenol?

I fainted on Friday night (it is now Sunday Morning) and hit my head pretty hard on concrete. I was at a friends house after I had 2 beers at the bar, I had just cracked a third beer, and we went outside to have a smoke . After one cigarette I felt dizzy and put my beer down... the next thing I remember is him carrying me into the house. He had me lay on the couch and I remember being really confused about what happened. My head felt fine at that point, but I felt really weird... confused, tired, and scared at how he was reacting. Once I felt like I could sit up I did, but moments later I lost my dinner. After only 2 and a half beers, it seems like I shouldn t have become sick from drinking. I got a ride home and help into my house and my fiance looked after me all night (I slept for maybe an hour or 2), but I still felt no pain just a little confusion over what had happened. The next morning I finally looked in the mirror... I have bruises on my jaw and near my eye and my ear was cut up pretty bad. Saturday afternoon I got a headache and off and on nausea , so I just stayed home and tried to rest. I woke up at 2am this morning and I haven t been able to go back to sleep; my head hurts and the nausea has returned. I m debating if I should go to the ER, or just take some tylenol and see if it improves.