Best Answer: Occasionally ovarian cysts do cause irregular periods, particularly in a condition called PCOS (Polycystic ovary syndrome) in which the hormonal system that regulates the ovaries is disturbed, causing them to form a large number of cysts.
What is Scrum? Scrum is an agile way to manage a project, usually software development. Agile software development with Scrum is often perceived as a methodology; but rather than viewing Scrum as methodology, think of it as a framework for managing a process. Scrum is an agile way to manage a project, usually software development.
Agile is the methodology. Scrum is one of the Agile method or a framework that facilitates enforcing some of the Agile values. Scrum Master is a role in Scrum team. These sites are the origins of Agile & Scrum respectively and good place to start.