Okay so I need some help , my son is almost seven months old last week he got his 6 month shots &…

Okay so I need some help , my son is almost seven months old last week he got his 6 month shots & the dr told me to come back to get the flu shot when he seven months he having trouble breathing & coughing , running nose & wants to be held I’m afraid to say I think my son has the flu his snot was clear now it’s yellow please help !!