So my son started coughing, sneezing, & have the sniffles after he got his 4 months shots & the lady put something in his mouth too on Tues. Dec. 6. His temp is good right now. His temp was high on Wed. Dec. 7 but it's back to norm. So he passed a fever quick. What could it possibly be? Cold or pneumonia? If so what can you do to make it go away? His cough doesn't sound dry cuz he has the sniffles. No vomiting nor diarrhea. Please let me know what you think. Thank you.