My LO has been fighting a cold the past couple of days. He has been nursing more frequently during this time (come on Mommy antibodies!). This afternoon, I heard a very peculiar squeaking as he nursed. I realized it was coming from his ear every time he swallowed. It has happened each time he has nursed since. He has also been very fitful nursing. I know congestion may cause him discomfort while nursing, so I use saline spray and aspirate beforehand. Is this audible squeaking a sign of an ear infection??