I think there is no reason to worry because it is normal to have periods lasting for 1 or 2 days . But whenever in doubt we should clear them .Hope you are having your periods on time.
Next Steps
It is advisable to have a sonography to be done.
Health Tips
Have a healthy diet comprising of protein , carbohydrates and fats . Include green leafy vegetables,dal , pulses, salad ,milk /paneer/curd regularly in your diet and walk or exercise regularly.