Why does it take so long for a wound to stop bleeding when i get cut/scratched? is this serious?

It's possible: Sometimes a bleeding disorder (a disorder that prevents normal clotting) can be diagnosed with everyday injuries. Patients that bleed more than normal, bruise easily, or require transfusions with normal surgeries or injuries may have a disorder. Discuss your situation with your primary care physician as this can be diagnosed with the right labs and a good history and physical.

Could be: Go see a hematologist to make sure you do not have a bleeding disorder.

Bleeding time: I would be more concerned if you developed bruising easily from minor trauma, had bruises develop with no history of trauma or had ongoing bleeding when you flossed and brushed your teeth. Unless you are using a stopwatch to time how long it takes to clot, it is hard to identify how long it takes to stop bleeding. It also has to do with where the injury occurs, how deep the injury is, etc.