My snot has blood/streaks for 2months.my doc just gave nasalspray. do i have cancer? should i continue to use nasal spray to evaluate situation?

Unlikely cancer: The more common reason for your plight are nasal irritants, allergens, and or sinus infections resulting from them. House dust, smoke, fumes all irritate the nasal passages. A nasal wash with saline (netty pot or spray) and or steroid nasal spray may help.

See and ENT doctor: Continous nasal blood tinged mucus may indicate sinus infections, polyps or other problems.