Hello,
Aside from pregnancy, a delay in the menstrual period could be due to physical or emotional stress,
depression, malnutrition, sudden weight loss or gain, certain drugs, medical conditions (such as polycystic ovarian syndrome, thyroid or adrenal gland problems), breastfeeding, or others. If there is even a slight possibility of you being pregnant, you may do a home pregnancy test (HPT) one week after your missed period.