It's been 51 days since my last period.i took hpt, but was negative.i have lower back pain and always sleepy.is it still possible that im pregnant?

Repeat the Test: I would advise repeating the test one time. If it remains negative and your period does not start then please seek out an appointment with your family physician.

When did you test?: By 51 days out the HPT would have picked up on the pregnancy. 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.,OC) or medl problems (i.e. PCOS). #1 reason= pregnancy.