It is infrequent and very light menstrual periods which can be due to Hormonal disorders, polycystic ovaries, stress and also seen in athletes
There are literally hundreds, if not thousands of diseases that are associated with the female reproductive system. Here is a list of a few. It is not comprehensive: - ectopic pregnancy - ovarian torsion - pelvic inflammatory disease - fibroids - cancers - STDs - polycystic ovarian disease - endometriosis - bacterial, viral, or fungal infections - bartholin gland cysts - hydrosalpinx - endometrial polyps - dysfunctional uterine bleeding - asherman's syndrome - amenorrhea - dysmenorrhea - menorrhagia - metrorrhagia - oligomenorrhagia - cervical stenosis - cervical incompetence - vaginitis - vaginal prolapse - vulvodynia - vaginismus And many, many more.