When my tinnitus started and the times that I really got obsessed with it, I would hear it everywhere at work. But as soon as felt more calm and relaxed, I'd stop hearing it. I rarely use headphones and only if there are to much chatter around me to block off some noise (usually only the NC, no music). My keyboard gives me enough sound so I don't think about it all the time, so I think you're very anxious and it does amplify the T a lot. I know it sucks but try to take a few days off if it helps, talk to someone at work about your worry, maybe they can help or keep you occupied so you don't think of it too much?