Lots of water & rest are the most important things to do. Also, my Mom likes to drink hot lemon juice (fresh-squeezed, mixed with hot water, stir in some honey or maple syrup) - she finds that it helps break up the congestion.
I've used homeopathic remedies when sick - Bryonia is a good one for chest congestion/bronchitis, so you might want to check with your doctor if it is ok for you to try some homeopathic stuff. There are also bronchitis combination remedies that may be helpful...
http://www.truestarhealth.com/Notes/2202000.html gives instructions for use and also lists some other homeopathic remedies for bronchitis and gives symptoms that the remedies should help relieve.
Fenugreek tea can also help keep mucus thin so it is easier to get rid of, but may have drug interactions (check with your pharmacist). I hope this is helpful - take care & I hope you feel better soon,
-Razzle
Chronic Lyme Disease, Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, Anemia, Lymphopenia, intermittant Pancytopenia, chronic malabsorption/malnutrition, etc.; G-J Tube; Currently TPN-dependent.
Meds: Zofran, Pulmicort, Vitamin B12 Shots, Heparin (to flush PICC line).