A delay in menstruation by two days with breast pain does not necessarily indicate pregnancy; it could also be due to delayed ovulation this month, which is a possible premenstrual symptom. However, if menstruation is delayed by a week, pregnancy should be considered, and a pregnancy test should be conducted. Sometimes, various factors can cause delayed ovulation and menstruation, such as changes in the environment, recent high stress levels, frequent late nights, excessive dieting, or extreme weight loss. Some individuals may also have endocrine issues, such as polycystic ovary syndrome or ovarian function problems, among others.