Whether recognition of set periods to expect menstruation is Biblical or Rabbinic: Niddah 9a, 15a-b, 16a
Whether one can establish a period via bleeding which occurs while one is already menstruant: Niddah 11a-11b, 39b
Whether one can establish a period via bleeding which occurs while one is impure from genital discharge: Niddah 11a-b, 39b
Whether a woman who doesn't have a set menstrual period may have sexual relations, and whether they may require divorce: Niddah 12b
Assuming that Bleeding Occurred During the Expected Period
The rule that, "It is assumed that the visitor comes at his appointed time": Niddah 16a, 64b
What if a woman didn't check for blood during her period, and checked later and did [not] find anything: Niddah 16a
What if a pregnant woman didn't check for blood during her period: Niddah 9a
What if a woman in hiding didn't check for blood during her period: Niddah 9a, 16a, 39a
Periods Linked to Physical Stimulation
Establishing a period when blood appears following vigorous jumping: Niddah 11a
Periods Linked to Calendaric Date and Physical Stimulation
Establishing a period when blood appears on a given date, and she jumps vigorously on before the blood appears: Niddah 11a
What if she jumps on a given date and bleeds, jumps on the same date in the following month and bleeds, and then jumps one day early in the next period, but bleeds only one day later: Niddah 11a
Relevant Laws
Whether or not we assume that discovery of menstrual blood indicates earlier impurity, if she has a usual period for bleeding: Niddah 2a, 4b-5a, 9b, 63a
Whether or not we assume that discovery of a menstrual bloodstain indicates earlier impurity, if she has a usual period for bleeding: Niddah 4b-5a
