Why am i bleeding/spotting after my period just went off? ive been having irregular periods ever since last year now?

There are many reasons why periods become irregular. It could be a difference in activity level, it could be physiologic stress like anxiety, it could be a difference in weight, etc. If your menses were regular and now they are irregular and there is no clear reason, you should see your doctor and get an evaluation. You can see your gynecologist. Good luck!