What Could Have Triggered Constant Dizziness And Vertigo?

Last Monday night I got into a fight, but I do not remember ANY of it. That morning on Tuesday Feb 18, I got up at 430 to go to the restroom and i was so dizzy I fell into my side table and dresser. I spent days in bed and yesterday finally got up and about. If I look down or up when standing I get seriously dizzy. I went to the mall with my fiance and when people would walk by, I would get vertgo so bad I would walk sideways and almost fall over. If I am laying down: I spin so bad I can t seem to make it stop. If I go from laying to sitting or sitting to standing. If I am laying and roll over slowly I still spin really badly. I don t have the money to go to the doc and I don t want to go to an ER if it will pass and then I have a huge bill to pay from a CT and whatever else they want to do. Thank you so much in advance if you get a chance to give me your thoughts on this. I am 36, 5 2 , and approx 175 lbs