Yesterday I had Sudden spike in head and spinning while on work and headache started after that..feeling heavy head and  so much tired This is third time I experience in last 6 month. Earlier Shown to MD medicine but no findings.. Failing Also frequently failing ill,body pain,back and neck pain. Also in last week experiences chest pain in left side..shown to cardio, done TMT and 2D but results are good..pl suggest..to which doctor I should consult