It is possible for you to stay, even if you become divorced, by filing for a 'good faith, no fault' waiver of the joint petition requirement. You will need an experienced lawyer to help you with such an application, and must still abide by the time requirements of removing the conditional aspect of your residency. Good luck!
That's a situation in which many people find themselves, unfortunately. Before commencing a divorce you should consult an experienced local immigration attorney to develop a plan for dealing with your status and application.