Welcome to healthcare Magic Forum..
There may be various reasons which may be leading to nose bleed in you like,
Trauma, including self-induced by nose picking
Allergic and non-allergic rhinitis
(high blood pressure
Use of blood thinning medications
Less common causes include tumors and inherited bleeding problems.
I would advice you to consult a doctor and get urself investigated to determine the exact cause which might be leading to your problem!!
Hope this helps!!