Is black vaginal discharge normals i just got done with an irregular period 2 days ago and have had none til today. some mild cramps.

Old blood?: Dark discharge can be old blood at the end of a menses. An irregular period may be unusual induration, flow and quantity. However, an irregular period can be a miscarriage or another imbalance so if the problem persists, see md.

Too little info: I know too little about your history, but with irregular periods it is not unusual for old, partially decomposed blood from the shedding endometrium to ooze out as a black discharge.