My period is four days late. every morning i'll cramp mildly and then by the rest of the day i don't cramp at all. am i going to have a cycle this month?

Irregular menstrual periods are common. The fluctuations of estrogen and progesterone can be easily affected by Pregnancy, stress, weight gain/loss, too much exercise, thyroid problems. A pregnancy test will be positive as early as the first day of a missed period, for all other concerns, talk to your primary Dr, if this irregularity persists past 2 months.