+1 for earplugs at night.
@Bill Bauer Infection of the outer ear (otitis externa) is facilitated by moisture. This is why is gets called "Swimmer's ear," so putting foam earplugs in after a shower makes a perfect moist environment to foster infection. Hope it clears up with the antibiotics. In the future, shower earlier, and some rubbing alcohol on a q-tip not too far into the ear canal can dry things up a little faster as the alcohol evaporates.
@Michael Leigh Your advice for sound enrichment at night should be taken on a case by case basis. It certainly works for you from your posts, but not everyone, so be careful not to generalize (heck, no single treatment is the answer for every patient with a condition anywhere else in medicine either). Low level sound makes my tinnitus worse. After a good night's sleep, my tinnitus is often quite a bit better, but when I can sleep with foam earplugs, the effect is even greater in my experience. I habituated from a tinnitus level of 7-8, so intrusive it was waking me up, down to a 1-2 most days in about 9 months, and I credit the earplugs at night to helping this quite a bit. I think it is safe to say that sound enrichment vs earplugs vs nothing at night should be decided for each of us, and not a one size fits all solution. Also, if one is not working for them, people should not be afraid to try another option and see if it helps. When I tried some sound enrichment at night, at least for me, it did not help, and I was waking up with worse tinnitus.