Article: Premenstrual symptoms (PMS) are caused by hormonal changes in your body and they typically occur in the days immediately before your period starts. Some girls experience severe premenstrual symptoms, while other girls do not notice any symptoms at all. The severity of your premenstrual symptoms might also change as you get older. There is no guarantee that you will experience any of these symptoms before your first period, but if you do experience them, there is a good chance that your period is coming! Many girls experience a soreness, tenderness, or swollen feeling in their breasts right before their periods. If you notice this, you should expect your period to come soon. Some girls also experience emotional changes in the days leading up to their periods. It is different for everyone, but you might feel unusually sad, angry, or irritable. These feelings will typically go away in a few days. Acne can occur at any time, so it is not necessarily a sign that your period is coming. However, if you notice a sudden increase in the amount of breakouts you have over a short period of time, it may mean that you will get your period in the next few days. You may experience cramping in your lower abdomen or lower back or a bloated feeling in your stomach right before and/or during your period. These symptoms can range from mild to severe, and they may not be the same every month.  If you experience severe cramps that interfere with your daily activities, you may want to treat them with an over-the-counter pain reliever. Exercise and heating pads can also help reduce your cramps. Talk to your doctor if the cramps are severe and not improved by taking over-the-counter medications.

What is a summary?
Understand premenstrual symptoms. Be aware of breast tenderness. Watch out for moodiness. Look for acne. Notice cramps.