I have missed my period which was due on the 27th of last month. Iam on medicaiton for shoulder impingement taking celebrex, (celecoxib) mydocalm and reparil?

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.