Suggest Remedy For Nausea After Falling Down

I fell down the stairs this morning, and a pull-up bar fell on my face last night. After falling down the stairs, I felt nauseous. I still kind of do, and now I have a headache. My back and neck hurt, along with my coccyx. I'm supposed to go to work tonight at a retail store, but I don't know if I should, and I don't know if I should get checked out or not. I don't want to go if I don't need to, though.