I am not sure what is going on with my child

My son is 2 years old, he has a ton of middle ear infections. The doctors use to only give him amox. until another doctor put him on augmenten. He cant get rid of these ear infections. He has always been a happy little boy you know very talkative, playing around, loving on everyone, you know just really sweet. My parents heard on TV about a little boy who had strep throat the doctors gave him augmenten then he turned really mean having a lot of behavioral problems. My son has always been really good now he is biting, hitting. screaming, everything you can think of he is doing. I know that he might be going through the terrible 2s but he is just acting really weird not his self. I would just like to know what I am really dealing with.