My 3mo ds had a virus that my 4yr old ds brought home from school. For the past two nights, he's been screaming from 7pm, until 5am. Unless we rock him, and even then he screams until he falls asleep exhausted. He also refuses to nurse, if I try to BF him, he screams even more. But the next day he nurses compulsively. He has no fever, but he does sound a little congested. Do I just wait it out?