Confusion between irregular bleeding (istihadha) and menses (haydh)

Question: When is it possible to know when the blood which exits from a woman is menses or not?

Answer: Menses is known by the dark red color, it doesn’t exceed 10 days nor shorter than 3 days.

Any blood that’s seen that doesn’t have such descriptions isn’t menses, and a woman who has a habit of time for example, if she sees any blood outside her habit then she will count that as irregular blood.