I have a earache and it hurts really bad. what should i do?

A physical exam: Ideally the best thing to do is see your family doctor for evaluation and treatment , the second best course is an urgent care center, next best move is to try an over the counter anti inflammatory for temporary relief until you can be seen by a medical provider. There are lots of reasons for ear pain, it could be as simple as allergies or it could be an infection, more information and an exam