Bleeding week 6

Ive had some bleeding last mon. Went for scan. By lmp im 8wks, but by gestational sac its 6wks. The bleeding went on and off on some days. It doesnt seem to go away today. Been having it continuously but its not a lot, like after passing urine, then when i wipe, there seem to have some blood like light red. Dr did mention that baby is not growing as fast as it should be. Should i be worried? Should i head to the emergency?