You need to nebulize with 3 or 7 per cent saline. 7 works better. Saline for nebulizer you can get without prescription on amazon. Nebulizers you can get online. I have a pari vios. Then you need an airway clearance device like an acapella or an aerobika. You nebulize, then use the aerobika, then huff cough and see if anything will come up. The idea is to loosen the mucus in your lungs and keep it moving so it can come out. Otherwise it plugs up in your lungs and gets infected. I too am mildly infected in right middle lobe. I nebulize every other day . If you get sick you need to do it more. Mucinex helps if you feel plugged up.