Disorientated, confused

[Bilal16]

2 months before, I headed a football from the middle of my head. I was near fainting after that as i wall already exhausted but I didn't. Then I felt okay. The next day at night, I had a simple seizure. Just trembling and change of taste and a small fever that disappeared overnight. I had diarrhoea and swollen lymph node in abdomen that healed after I went to a doctor who treated my condition as a viral gastritis. That day I also ate something from outside so maybe that was it. Then everything was okay though I felt pressure in middle of head. Where i hit the ball. Then after 3 days, I had chills/trembling at night. This went on for 5 days then healed. I was all ok. After 3 weeks of being normal, i started to have chest tightness that increased till my left arm went numb in a specific position. It became sharp overnight. But when I raised my arm over my head, it sort of went away. Also when i lied down, the pain came back.Doctor treated it as muscular cus my ECG was perfectly normal. Infact, healthy athletic cus I am 16. Then I was normal again. One night, I woke up with sharp pain in head middle. I was alright but i felt pressure again. Then i became normal. After 20 days, i had head aches, head pressure, cold feeling on one side but headaches were dull, throbbing and went and came. Went and came. I still have chest ache, its in centre and a little left. But i don't have breathlessness or anything now. These symptoms disappear then come. Neither do i faint now, but i hear voices like ticking or clicking inside head when i run or shake it. I sometimes have muscular pain in leg calf muscle, groin etc. But they go away. I am confused but normal. No memory loss, nothing else. But i am confused and the pressure comes and causes me to feel bad. No MRI as now i am a teenager and its damaging. The doctor did some tests of blood and urine and everything came normal. He said there was no head injury but i am worried. I have a little red eyes but chest ache hurts as does head aches, they come and go and are dull. Please help!!!!