There are many reasons you might miss a period. Simple things such as stress or exercising too much can cause a missed period and many girls are irregular during the first few years of menstruating. But if you've missed a few periods, be sure to see your healthcare provider.
Courts usually find probable cause when there is a reasonable basis for believing that a crime may have been committed (for an arrest) or when evidence of the crime is present in the place to be searched (for a search).
Full Definition of CAUSE. 1. a: a reason for an action or condition: motive b: something that brings about an effect or a result c: a person or thing that is the occasion of an action or state; especially: an agent that brings something about. 2. a: a ground of legal action b: case. 3. : a matter or question to be decided. 4.