Pink eye????

My son's one eye is kinda redish and it swollen a little bit. I am afraid if he has a pink eye oh God pls. don't. I don't want him to have a pink eye cause I know what it feels. I have a pink eye when I was a little it is painful and it bothered me a lot. So, hope it's not a pink eye.... I am scared. It's five of us here and if one get sick it will pass to one person to another.. Yep it's not good at all.

I noticed it yesterday evening when we ate supper at the table. He went to school yesterday and wondering if he get it from there..