The "real self-employed" mentality allows for no sick days. Only days I have not worked of some kind were days spent completely in the hospital operating room or recovery room.
Many jobs, concurrently... some consulting/private contracting.... But, working for a manufacturer once, I called in sick... back in 1997... ONCE.
When you're self employed you work till you physically can't work anymore or you go broke
I am self employed, and if I'm sick, I call my clients and let them know, I can't do my job that day. I don't work from home, as I have a house cleaning business, and can't do that from my living room.
take some nyquil and go to sleep