I have an question for you guys. My son just turned one and I have been nursing him some and giving him some formula he also eats some food. I had to supplement. My question is in the last week or so on one side every time he nurses it hurts really bad. The other side is fine its just that one side.I have no idea what it could be or how to fix it. If you guys have any ideas of what's going on or how to fix it please let me know. Thank you for any information you guys can give me.