Calendar Deleted

I went accidentally clicked the box in iCloud that syncs the calendar and it deleted all of my events from all years! I use the calendar for everything and need both past and future events that it contained! Is there any way of recovering all of the dates and events somehow? Please!!

Did you uncheck Calendar in iCloud or did you check the option to sync? If you unchecked, you can simply check for it to sync back to the cloud.

Do you have Time Machine backups?