SICK sounds much better: https://books.google.com/ngrams/graph?content=I%27m+not+sick%2C+I%27m+not+ill&year_start=1800&year_end=2008&corpus=15&smoothing=3&share=&direct_url=t1%3B%2CI%20%27m%20not%20sick%3B%2Cc0%3B.t1%3B%2CI%20%27m%20not%20ill%3B%2Cc0

Zero result for both? 🤔

Huh?

https://books.google.com/ngrams/graph?content=I+am+not+sick%2C+i+am+not+ill&year_start=1800&year_end=2008&corpus=15&smoothing=3&share=&direct_url=t1%3B%2CI%20am%20not%20sick%3B%2Cc0

https://books.google.com/ngrams/graph?content=I%27+m+not+sick%2C+I%27+m+not+ill&year_start=1800&year_end=2008&corpus=15&smoothing=3&share=&direct_url=t1%3B%2CI%20%27%20m%20not%20sick%3B%2Cc0%3B.t1%3B%2CI%20%27%20m%20not%20ill%3B%2Cc0

That's strange - I saw a diagram before I posted the link. 😕

Ага, теперь видно) 👍

«Я не болею» can also mean “I never get sick.”

Add it!

Done