I'm thinking it is wax buildup, because I'm a week late on cleaning her ears, I usually clean them every 2 weeks or so. And I've been so focused on getting her URI cleared up, that it just slipped my mind. But to be on the safe side, I'm going to make her an appointment, because she's already had one bad ear infection when she was a baby. I tried cleaning them last night and she had a fit, like she was very uncomfortable. Thank you both for the advice!