Another ear infection...

My daughter, whom was fussy as a baby until I stopped dairy all together while nursing, got tested for a milk allergy and it came back negative. So, I decided to try and give her cow's milk. At first she wouldn't drink it, as she preferred soy. So, I kept her on soy. The other day, we were out of soymilk, so I gave her a sippy cup full of cow's milk. The next day we went to the doctor's office and found out that she had an ear infection. What!?! It is an interesting coincidence. I do not imagine that I will keep her off of all dairy products, but until I'm certain, she will definitely stay on soymilk.