At 20 years of age, most people who have not given birth are usually suited to a small or medium menstrual cup size. However, because you have a heavy menstrual flow, you may need a cup with a higher capacity to avoid frequent emptying. The choice of menstrual cup size often depends on menstrual flow, the position of the cervix, and comfort. If your cervix sits lower, a shorter cup may feel more comfortable, while a higher cervix may require a longer one. It is reasonable to start with a medium cup and adjust if you notice leakage or experience discomfort. If you are unsure, it is best to consult your doctor or a gynaecologist for personalised guidance.

Yes, a 16‑year‑old can use a menstrual cup. The Small size is usually recommended for teenagers and first‑time users because it is easier to insert and more comfortable. However, the right size can vary depending on individual anatomy, menstrual flow, and comfort.