上避孕环的优点是显而易见的,因而受到很多女性的青睐。有不少女士问为什么上环前月经周期和经期都很正常,但自从上环后月经期或月经量都有不同程度的延长和增加呢?甚至还有个别上环后的妇女常常出现月经偏多、月经周期延长、痛经等现实。这些现象的出现。其实原因是多方面的,并非都是避孕环本身的原因。 The advantages of the IUD are obvious and are therefore favored by many women. Many women have asked why the menstrual cycle and menstrual cycle in Sheung Wan are normal. However, the menstrual period or menstrual volume in Sheung Wan has been extended and increased to varying degrees since then. There are even a few women who follow the ring often experience menstrual cramps More, prolonged menstrual cycle, dysmenorrhea and other realities. The emergence of these phenomena. In fact, the reasons are many, not all of the reasons for the ring itself.