That's right, Shar_M. Considering that up to 30% of women have irregular menses during their lifetime, another 10% have polycystic ovary syndrome and up to 50% of adolescent women with severe dysmenorrhea  as well as a smaller percentage of adult pre-and post menopausal women have endometriosis, the chances of prescription errors is low when these symptoms are reported.  Since the medications for these disorders are not controlled substances, the prescriber would not have worry about losing his/her license or being charged with a felony if someone made a case of it.  What's more, there has to be demonstrable harm to the patient and evidence of substandard care before the prescriber would be charged with anything, including fraud, if the patient reported the appropriate symptoms and other causes were ruled out.