Are Nausea, Dizziness And Fatigue Post An Injury A Concern?

Hi, so a month ago now I was in a wake boarding accident and I went face first into the water at a high speed. I was diagnosed with concussion, I had a very painful headache predominantly located on my front left side of my head as well as dizziness, nausea, fatigue and sensitivity to noise and light. For the first two weeks I couldn t bare to be out of a dark room especially without a bucket as I could literally feel the vomit in my throat rising up, although I never did vomit. I ve had plenty of doctor trips to my GP who doesn t seem completely sure what s going on, and since then I ve been told to get out of the dark room and sit up right instead of laying down which I have been doing. Nothing has seemed to be getting much better, so the last time I went to see the doctor he sent me up to the hospital for an emergency CT which never went ahead because the doctor at the hospital said a CT could be harmful to my lady parts and could increase my risk of a brain tumour. So I was sent home with pain killers and nausea tablets which do nothing at all. I m slightly concerned about my head and if there is any damage. Am I right to be concerned or am I worrying for nothing?