I have felt a lot of dizziness, sleep, a lot of headache ...

Good afternoon, I have felt a lot of dizziness, a lot of sleep, a lot of headache, a lot of sensitivity in the hearing and a lot of heat and I do not know what to do. I want to see a doctor, but I do not know which specialty I should look for. You need to be willing, because I'm doing a second college and I can not afford not to take it. I work in a bank and often, I take energy to hold the wave. Need help. Thank you!