Home remedies for Upper Respiratory Infection ?

My doctor just gave me a list of medications I can take but nothing seems to be helping that much. I am currently going back and forth with Mucinex dm and Robitussin, and occasionally Benadryl because it seems to help dry up the mucus running down my throat. Everything seems to be helping in rotation but I still feel like crap! I am staying hydrated and drinking lemon 🍋 stew and safe teas, drinking broth, eating soup, etc. I’ve been breathing in hot steam with peppermint and eucalyptus oil to help open my air passages. Any suggestions would be very much appreciated. This has been going on for about 4 days now and today I finally started to cough up chunks of phlegm, which is great because it’s making it easier for me to breathe and it’s making me cough less but still, my cough is there and so is the phlegm. I need suggestions please. I am 22 weeks pregnant by the way.