I think you need to trust symptons over testing. I think the test are generally accurate, but not always. If you feel really bad, and you test positive. Then start your treatment regimen. If you feel bad, and test negative then I would still start a treatment regimen and then just retest in a few days. Pretty sure when my Mom had it the test was wrong. They said she was negative and might be getting bronchitis. By the end of the week she was much sicker and tested positive. I would err on the side of caution.