Chronic headaches, random nausea, hearing loss are all signs of what?

what is wrong with me? ive been having the worst headaches and the get worse gradually throughout the day. i'm nauseous randomly, not all day, but sometimes i get nauseous out of no where. i am also losing hearing in my left ear, and i have had random speech impediments, too. this has been happening for like a month and a half now.. should i see a doctor? what is wrong with me?