i'm pretty better now, the doctor did me a radiography and we saw what you are talking about (the spots in the lung)
i had quit smoking a week ago before that happened, i did not tell that to the doctor until now, he said me that's not good for lungs of course and maybe have caused that spots
i live in a big city, maybe also is not good for lungs, next week i'll go to Macau for 3 months, hope there will have better air :D