I only had my period for one day couple hours what does it mean? Is it maybe because im stressed?

Irregular . Irregular periods can occur at any time for multiple reasons, and is also very common. Stress can definitely contribute; in addition things such as extreme weight changes (increase or decrease) hormonal imbalances including thyroid issues, and pregnancy are all factors to consider. If you don't get your next period as scheduled then you can consult your doctor. Best of luck.