At this point you can only do what you can do. Call the court and try to explain what happened. They could issue a warrant for your arrest. You have got to make going to court a priority.
Although I have answered the question to try to help you, you should consult with a lawyer in your area in person on the matter. In addition, my answer does not establish an attorney-client relationship between us.
You can certainly try, but you better be able to prove you were sick- either a prescription for medication or a family member or someone else that can vouch for you.
Call the court right away, apologize, and request a new hearing date.