My jaws joint hurts when i eat something. in the past i was cracking my jaw. and when i swallow my split i can hear bubbles popping in my ears. what should i do? does that mean that i damaged my jaws joint?

It appears how you have traumatized your joint .You should avoid opening your mouth too wide and avoid eating on hard food . You can use hot and cold pad alternately 15 minutes Two to three times a day for a week and take some over the counter pain medication . you can also massage on both sides of jaw joint . If condition does not improve see your Dentist for full evaluation and treatment.