Polymenorrhea (poly = many, menorrhea = bleeding) (Frequent Periods) or frequent irregular periods are typically due to problems with the way you produce hormones, or because there is a lump or bump in the pelvis (e.g. fibroids, polyps, ovarian cysts). If your periods or pain has changed it is important that you visit your doctor so that some simple tests can be carried out. These may include a high vaginal swab (to look for infection), a cervical smear test, an ultrasound scan.
You may need a hysteroscopy or laparoscopy to further investigate the possible causes of your problem.