I need Mommy advice. My daughter for the last three days has had her left eye looking swollen some…

I need Mommy advice. My daughter for the last three days has had her left eye looking swollen some and red. The inside of her eye is perfectly fine. Today she started running a fever, I gave her a cool bath and some meds she laid down for a nap, and woke up with her voice all raspy her nose is running she has a slight cough. I feel so bad for her. I got her some pedialyte and zarbees natural mucus and cough remedy. I'm praying that helps her so she doesn't get sicker. I'm just at a loss of what is wrong with her eye.