As they grow up, girls are often told that every woman's period is different. Some girls experience more pain and discomfort with their periods than others. Some experience heavier bleeding than others.
These statements are true, but sometimes they have the unintentional effect of leading women to believe that whatever symptoms they experience during their periods are normal and nothing to worry about. This can lead to medical problems being overlooked for years simply because women do not realize their period symptoms are worth mentioning to their OBGYN.