Work related concussion

About a week and a half ago I was helping to restrain a pt. About 6 people were holding the pt. Down and he managed to punch me in the face. I did not lose consciousness but went to the er shortly after with headache and dizziness. They didn't do any tests and discharged me quickly. Over the next few days the headaches became unbearable and I was dizzy when not lying totally flat. I also became nauseous. I went to my primary who ran a ct negative for bleeds but said it was post concussion sx. I then went to an occupational med dr to deal with workmans comp. She barely examined me and wrote off my symptoms saying I was ready to go back to work in a few days. I told her I could barely sit up without being dizzy and she said it's better to go back to work. I still have a few days off (coming out of my own pto by state law) but I feel like she's getting me back working before workmans comp pays my out of work time. I work in a level one icu and don't feel safe returning to work which I expressed to this dr but she just blew me off. I'm not sure what to do at this point. My dizziness is a little better but still have a terrible headache and haven't even been able to reAd a book at home. Any advice appreciated. Thanks!