For 3 days been having belly button pain and now bleeding from my belly button also even having pain in pelvic region and around the sides ?

Umbilical bleeding ?: Bleeding at the umbilicus ("belly button") is highly unusual, unless there is a scab from some trauma. Pain at the same time in the pelvic region and "around the sides" may occur with endometriosis at the time of your menses, and rarely could be the cause of the bleeding at your umbilicus. See your gyn provider for an exam, and potential treatment for this or a potential infectious origin.