medical checks

I have been working in Qatar for the last 4 years. I recently got a new job which required me to go for the new medical report. when I went they said that my x-ray was abnormal. they asked me questions like if I had ever gotten sick of TB and I said no. then I was given a later date for a more tests. I was injected with something which they took measurements after 2 days. it came to13mm. I later came to know that this substance if once injected with it, will always be positive. I told the nurse that in my first medical test I had been injected again but she didn't listen. they then said I should go to yet another blood test which I went after one more week. note that I had already resigned from my old job and now waiting for the commence date to the new job. but these people are telling me that I am sick while I haven't even lost a gram in my wait or felt anything in my body. so I read through research that medical is also allowed from Doha clinic. I decide to go there and have a full check . when I went I get more surprised because the doctor says that I am 100% okay. and the shape of my lung is natural I was born like this. There is no problem with my lungs. I then take this copy of medical report with me to the medical commition and explain to them that I need a new check because these reports I got also from a qualified doctor. this people then turn me away saying that unless I hand brought the medical report from Doha clinic before they sent me for a referrals at rumila hospital. remember that this is my fourth week trying to get clear . I then go to rumilar hospital and tell them my issue's. with me I take the new medical report from Doha clinic. the reception gives me a date to come back on august. I ask her if she was serious and she says yes. now am fed up and I refuse to go because I can see that these people are very in human . they want me to lose my job just for no reason. then I ask the reception if I have TB truly. and it was diagnosed a moth ago and now you are telling me to come on august will I be alive or dead. then she thought for a while and changed my appointment to 12 July. I am requesting any one with an idea or experience about this to pls advise. because I am frustrated . no salary is coming because I already resigned my old job. I already have an ID varied until 2017my sponsor is my husband. what can I do which doctor will I trust.?