Last month my period was only 2 days long this month it is 2 days late i've never had a late period i track it every month. usually lasts 5 days.?

Do a pregnancy test: If the pregnancy test is negative i dont see a problem, especially if you eventually get you period (within 36 dyas from last period). Rare for cycles to be exactly the same if not on birth control pills. Bleeding longer and heavy is more indicative of a problem.

Take the test: 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.