I've had that happen to me too, I remember whenever I did any sort of movement there would be constant clicking in my right ear that just wouldn't go away. I never did figure out what it was, but it did go away by itself after 2 weeks. However, right before it went away I had an intense throbbing in that side of my head, I could literally feel my veins widen & blood being pumped through them, it started when I was trying to go to sleep, I thought it would go away in the morning, but it didn't. I panicked & went to the emergency room & I think by pure placebo of being in a safe place where any problems I could have would be taken care of by professionals, it went away by itself. The doctors checked me & didn't find anything, I explained them about my anxiety & they sent me to see a psychologist. I'm not big into pills & she agreed with me & sent me home after having me take some tests.
I think that the throbbing might've been just induced by me obsessing about the weird ticking & had nothing to do with it at all, however, after that episode, I've had no reoccurrences of said ticking, it was more than a year ago that it happened.