Hi and welcome to HCM.yes, it happens but there should be some cause,most commonly benign one. you should dou gyn examination, vaginal and pelvic ultrasounds and hormones blood levels. These symptoms can be caused by ovarian cysts,endometriosis
defficiency. Anythign serious would be seen on tests i ve mentioned so if your are sure taht something is wrong you should insist on these tests.WIsh you good health.