Haven't been able to eat for the last 3 days straight and have had a pounding headache which gets 10x worse when I vomit. I lay on the couch all day and then go to bed and repeat because when I move it gets me very nauseous. It all started just under a week ago when I was lifting weights and a massive pounding headache suddenly appeared while lifting. It died down over night, didn't go away but was very minimal, I tried working out again the next day and right off the bat the headache kicked in. The next day I went to the doctor who sent me to the hospital for a ct scan where they also performed a lumbar puncture. All the tests came back negative for anything serious as far as I know. The day after the hospital visit the headache was more constant and not just under exertion and then the nausea kicked in and 4 days later I still have the headache and nausea and vommitting. I'm 22 year old male who eats and lives healthy.