Hi.. I Had My Chest Xray Sept Of Last Yr..

Hi.. i had my chest xray sept of last yr.. it was ptb right upper lobe. Then after getting the result i immediately had another xray because i really dont believe that i have ptb. It was clear lungs... after a month, i applied in a hospital to work as a nurse.. again, it was ptb right upper lobe. I took again another xray, it was clear lungs.. i consulted to pulmo and he said i really have ptb.. he told me to have a sputum test and it was negative. He prescribed medications... again, i consulted to another pulmo. She compared all my xrays and she showed me the infiltrates. She said i could have my apicolordotic view and if it was negative she would declare me fit to work... how is this so that they have different diagnosis regarding my case...