No she is too young for any meds...no one under 4 should take cold medicine, they are actually tryng to get it to age 6 I believe. Atleast in the US. She can do tylenol but I would wait to find out the exact dose from your pedi first since their weight is constantly changing at this age. But you can do saline nose drops and suck her nose out with one of the bulb syringe things, I would try not to do it too often, I only do it before feedings or if they are really uncomfortable because doing it too much can make their nose raw. A humidifier, or sitting in a bathroom with the shower on as hot as it can, close the door and let the room steam up, that can help her breathe too. Let her sleep elevated, in a swing, bouncer, carseat, or elevate her mattress...don't put her on a pillow though. I hope she feels better soon