My son has been sick for 2 months

sa

My 10 month old has been sick for almost 2 months now 😢 I’ve taken my son to three different pediatricians and they all said he has a viral infection which is common for daycare babies. “He’s building his immune system” they all said! I’m sick, too, and it’s not going away! I’ve never been sick for so long. It’s been months!! I notice that his cough has been getting worse recently. He has a good appetite and plays all day. He sleeps ok but wakes up a little more than usual. He has a cough and a nose full of snot, I can hear the phlegm in his throat when he coughs. No fever, no ear infection, breathing is normal according to the doctor.

Thoughts? I’m at a loss! He’s had a cough and snotty nose for 2 months!! Me too but I am mainly worried about him. I thought about taking him in for a sinus infection test. It’s so bizarre!!