My son has been really irritated by everything he Cry's for no apparent reason and I never have seen him like this I…

My son has been really irritated by everything he Cry's for no apparent reason and I never have seen him like this I took him in to see if his sick they said his ears and everything good he just has upper respiratory infection and his congested and they send me home like my son has been not acting his happy self lately one of his eyes been sticking together its just ridiculous I know something not right my baby has something hurting him .