Hello, And Thank You. I Have A Toothache , Which

Hello, and thank you. I have a toothache , which is a crown on a back tooth, lower level in my mouth. I'm not home and don't have a dentist nearby. My toothache is I believe, giving me an earache. Is that possible? I have been rinsing with salt water. Is there anything else I do to ease the pain, until I get home on June 9th??