There is no ASAP unfortunately when you have pneumonia. You do not need pain killers. Pain medicines can lessen your ability to breathe and right now, you have fluid in your lungs. All you can do now is take your course of antibiotics and any other medication (cough medicine, etc.) your healthcare provider prescribed. Just rest. Do not overexert yourself. You could develop pleurisy in your lungs which is extremely painful and could land you in the hospital. You will be back to yourself in no time as long as you follow your doctor's orders. Feel better.
I'm assuming you have had medical care and have received antibiotics, which you absolutely need. When I had pneumonia years ago, I just had to endure about three days of total misery. And it took several days to recover after that. Nowadays, when I have lung x-rays, large black spots still appear, scars from the disease.