Your best bet is to check with your doctor @A MyCOPDTeam Member.
When I'm having a flairup and it last for more than 19 days, I contact my pulmonary doctor for steroid prescription. That usually takes care of it after about 5 days.
Keep your eye on color of phlegm Good indicator if something going south
If the inhaler heps, use it. If the congestion doesn't begin to go away on its own, see a doc.