Hi, The sign and symptoms you are describing is very common in case of common cold and if the severity of the common cold is more than you can have more of these problems. Most of the time it is mostly the viral infection and sometimes secondary bacterial infection is also there if the sign and symptoms is not resolving. Typically a viral common cold can be there for almost 7-10 days and after that it starts regressing, but sometimes secondary bacterial infections can prolongs the problems. For common cold you can take medication for symptomatic improvement. As far as the association of mycobacterium kansasii is concern there is little chance of that, as mycobacterial infection is very chronic disease and its sign and symptoms is rarely that much acute as you are describing. It can be there if you immunity decreases and your general health is compromised. But since you have not have any problem like that so there is rarely a chance of that. Thanks and take care.