Aih, this sounds like a chemical pregnancy atau very early miscarriage lah, I have a few mum friends who went through this, memang confusing and heartbreaking. The line fades because the hormone (hCG) drops quickly when the pregnancy doesn't continue, so it's not actually progressing, bukan yang hormon tinggi je. Normally period will come after a few days or weeks, depending on how early it was, tapi tak semestinya sama timing like normal period. Best thing is to see your doctor to confirm what happened and make sure everything is okay, because they can check your hormone levels properly dan give you proper guidance.