Whats the difference between miscarrage and spotting being ok?

Beck 👨‍👩‍👧‍👧🌈👶🏻🖤🖤🌈🤰🏻

5wks 5days

Blood on toilet paper not reaching the line been 3 days now on and off arrange of different colours pink, red and dark brown stingy mucus nothing like a period some cramping here and there have a Drs apt tomorrow but what's normal and will I know if I have miscarried ???????