How long does it take you to recover from the flu when you have ME/CFS? I've been sick for almost 14 years and it actually started with mono & the flu, but I haven't had it since! This year, everyone got really sick with the flu and I did too. The worst seems to be over in terms of congestion and coughing, but I am so fatigued (much more than normal). I know it can take about 2 weeks for a "normal" person to feel normal after the flu... but what about with us with ME/CFS? Kind of scared.