I do, and usually make myself worse.
But I had proper flu two years ago, left work at lunchtime because I felt so awful, phoned DH to pick up the children (only second time I'd ever called him to come home), and didn't get up for four days. I actually couldn't get up.
Went back to work the next week, ended up with a chest infection, and an asthma "episode". Took four months, two courses of antibiotics and two courses of oral steroids to sort out.
Hope you feel better soon. 