The third vaccination will not normally affect menstruation.
Some women experience delayed or disturbed menstruation after vaccination, which is not caused by the vaccine itself, but may be due to stress or excessive anxiety during vaccination, which affects the body’s normal endocrine regulation and leads to abnormal estrogen secretion, which will affect the normal menstrual cycle.
Besides, if a woman of childbearing age does not know that she is pregnant when she is vaccinated, or if she is pregnant when she has just been vaccinated, this situation may also lead to the absence of menstruation, but the result of the early pregnancy test is positive. This is a normal reaction and there is no need to be too anxious or nervous.
The new vaccine does not necessarily cause delayed menstruation. Delayed menstruation may also be related to irregular diet, late night, dieting and weight loss, etc., so we should clarify the specific causes and then regulate the situation. When your period is delayed for 1 week, it is recommended that you consult a doctor promptly.