I need opinions… my son who is 16 months old has been so fussy , serve runny / stuffy nose , and he has only slept 4 hours in the past 24 hours … is this the start of rsv? He just cries and cries every time I lay him down for a nap and I honestly don’t know what to do anymore … should I go get him tested . He doesn’t have a fever that’s why I am hesitant. But he cries anytime he lays down