Got sick on the deadline at work

I haven't had any sick days in 4 months. I haven't missed work until today, the day that I have a deadline to meet. It started with sneezing, nose running,  voice started to changed and so I had to go home. I was like why?! Why now?! I have been working long hours every day and have been getting about 2 days off a month, and I've never got sick until today, the last day to do something important at work. I guess I have no choice but to deal with it.