I had about 5 to 6 CT scan between nov and dec could I have cancer in my lungs by now or dose it takes more then 6 scans of radiation to develop canc?

Perhaps the chance. Of getting cancer from a ct scan is in the range of 1/ 10-100, 00. So your risk would be 6/10, -100, 000. If you did not hae the ct's, your team would not know how to treat your pulmonary problem. Forget the cancer risk and get well.
CT scans. Cancer takes a long time to develop. If it happens this quickly, it would not have been caused by the ct scans.