Ay, alam ko yan, napakabilog talaga ng pagitan ng spotting at actual period! From what I've heard sa circle ko ng mums, spotting is usually lighter and shorter, like 1-3 days lang, while a proper period lasts longer and mas heavy ang flow. But honestly, kung unsure ka, better mag-check with your OB kasi marami ring possible reasons, stress, hormonal changes, or kung may underlying concern, at alam lang nila for sure pagkita nila.