The time for you to be swabbed is now before you show signs of a cough. By then it is too late. Also you can ask your doctor for preventative AB's. At this early stage (even if you swabbed negative you could still be positive) the anti-biotics would be a definate help. Don't be afraid to push for these things as some doctors don't seem to take WC seriously. (My son had WC at 5 weeks of age).