C.P.
A cool mist humidifer would probably help. If you don't have one, sit in the bathroom with the baby while you run a hot shower. Let the bathroom get good and steamy and stay in there for about 10 minutes. I would also try some baby tylenol drops. You may want to ask the doctor if you can get some popsicles for the baby to suck on. It can be very frustrating with a sick baby and no way to comfort them. Good for you for helping out as much as you are!!