I'm 22, 6 weeks since my last period, 44th day! any ideas?

Skipped period: Sometimes a period is skipped for no good reason. Stress, major illness, excessive exercising or weight loss are some other reasons. Check a pregnancy test if that is a possibility.

Missed period: Reasons for missed/late periods: low body weight, obesity, marked weight ^ or v, over-exercise, endurance athletics, breast-feeding, ^ stress, illness, eating disorders (bulimia or anorexia), anovulatory cycle (no egg released), travel, hormone irregularities, drug use, meds (i.e., birth control) or medical problems (i.e. PCOS). #1 reason is pregnancy.