No symptom for period this month. the blood test result shows that i am not pregnant. however, my breast is very soft now, am i pregnant?

Not pregant : If the blood test was negative, you are not pregnant. There can be many reasons for not getting a period. Stress can cause a period to be late or there may be other reasons-such as a thyroid dysfunction. If you do not get a period next month, I would recommend that you make an appointment with a doctor

Late: 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.