I just wanted to let everyone know that I took Lucas to his regular pediatrician today and they checked him out and he is A O K!
He does have a cough and runny nose, so they checked his lungs and throat again, and also his ears just to see if he had some sort of infection or swollen glands or anything, and everything was clear.
Thank you to all the visitors and commenters who showed us such support on The Worst Day of the Year. Those little ones are QUICK! We will definitely be more vigilant and less quick to assume what's out of his reach!