I'm not worried about this, just incredibly frustrated and wondering if anyone else has fallen foul. I've had the most horrendous cold and cough for just over two weeks. Loads of snot/phlegm, none looks infected. I have NO energy whatsoever. I get up every morning thinking I'm bound to be a bit better today, but no!! I'm very fortunate in having general good health, but this thing has knocked me for six.