Since yesterday, all the sounds i am hearing has been harsh and loud to me, my head feels a little hot also, why is that?

An infection, maybe: Sometimes sinusitis and ear infections can produce these symptoms. These can be diagnosed and treated by a doctor or nurse practitioner. Your doctor can also help evaluate you for other things that might cause these symptoms.

See specialist: Any form of sinusitis or hearing problems should be evaluated by a specialist in that field.