Pregnancy cannot be proved by delaying menstruation for a few days; delayed menstruation can also be related to physiological causes such as stress, or to illness.
Pregnancy can cause menstruation to stop occurring, but normal female menstruation can be affected by a variety of factors. Delayed menstruation may occur when there is mental tension, stress, or cold weather. Genital infectious diseases such as cervicitis and endometritis, and non-infectious diseases such as ovarian dysfunction, polycystic ovary syndrome, and anemia can cause delayed menstruation.
To determine if you are pregnant, you can use a pregnancy test stick to detect HCG (human chorionic gonadotropin) levels in your urine to make a preliminary determination of whether you are pregnant. You can also go to the hospital and have blood tests for HCG to determine if you are pregnant.
To summarize, you can’t tell whether you are pregnant by delayed menstruation. When you have delayed menstruation, you should consult a doctor in time to improve the examination and clarify the cause.