My mensus is late for 18 days.nw its almost 43 days.these days i took sm ibrufen 400gm.normaly if tk this my mensus late.but im not sure.am i pregnant?

You will need to: Take a pregnancy test to know. 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. Pregnancy is the primary reason. Take care.