Runny nose!

My 9 months old girl had runny nose for two days with clear mucus ,today she woke up with runy nose still but with green mucus! Now I know that there’s an infection when the mucus come out green… but I don’t know what to do since she’s having a hard time catching a breath and hard time breastfeeding…her doctor told me to give her fenisitil drops is there any other way to make her feel better without medication???( i have been using saline spray and bulb to suction out the mucus)