TB or not TB. Or not? what should i do?

Hello..i had severe cough and evening fever one month ago for 7 days.I consulted physician(md).after examining my xray he said its tb.i consulted another physician.he also said its tb.i started taking medicines of tb.i consulted a pulmonologist in fortis jaipur.he prescribed mountox test,sputam test for 3 days gene xpert,ct scan.All were negative..i dont know about ct scan.he said take some antibiotics if x ray doesnt improve we ll do lungs scopy.my cough was gone at this time after taking tb medicines for 7 days or may be due to antibiotics.but i decided to consult another pulmonologist.i consulted a DM.he again did my x ray and it was clear.he said it is not tb as in tb lungs do not clear in 7 days and prescribes lincotus dx.cough was gone..after few days coughing starts again with grey mucus but not that much.i did a x ray again there was little haziness not much.now i am afraid do i have tb or not?cough is still there but not much like before.what should i do?