Why do i get pms some months and not the other?

Premenstrual syndrome (PMS) can vary from month to month due to fluctuations in hormone levels, particularly estrogen and progesterone, which can be influenced by factors such as stress, diet, lifestyle changes, and overall health. Additionally, individual differences in sensitivity to these hormonal changes can lead to inconsistent PMS experiences. Other factors, like sleep quality, exercise, and emotional well-being, can also play a significant role in whether you experience PMS symptoms in a given month.