You need to see a doctor as soon as possible.
Nodules on the lungs need to be biopsied. You may have a metastatic tumor in your lungs. Have your physician arrange for a ct-guided biopsy of one of them so tissue can be sent to a pathologist to see what they are. You may also need as well a ct of your kidneys as soon as possible to see if they are responsible for your lung nodules. Good luck.