I have clear discharge before missed period. is this normal?

Clear discharge: Can occur at a number of times during your cycle. Missed/late period: low body wt, obesity, weight ^ or v, ^exercise, endurance athletics, breast-feeding, stress, illness, eating disorders (bulimia or anorexia), anovulatory cycle (no egg released), travel, perimenopause, just starting menstruation, hormone irregularities, drug use, meds (i.e., birth control) or med problems (i.e., polycystic >.