Recently my ears hurts while diving, though never did that?

I think it might be something called swimmers ear. It's an infection caused by bacteria in the water get into your ear and grow. it sometimes can give headaches or causes really bad pains in your ear. I've had it many times b4. all you do is when you get out of the pool, dry tour ears thoroughly with a dry towel, don't use a wet one. then mix one teaspoon of rubbing alcohol and one teaspoon white vinegar then put a few drops in each ear. it helps kill the bacteria. if even by tugging on it it hurts, go see a doctor. Hope this helps!