Where is this blood that i taste and then spit out it occurs occasionally but i never cough it up or anything like that and i feel fine i just randomly get that blood metallic taste and after 2 or 3 spits its gone is it cancer?? i have no symptoms

Blood in mouth: Your post is vague... do you actually have blood in your saliva? Or is it just a "taste"? Blood in your saliva can be coming from inflamed gums. Have you seen a dentist for a routine hygiene visit within the last six months? Brushing and flossing at home may not be enough.

Gum infection: Most common cause is infected gums. Brushing alone only gets teeth 65% clean. Brushing ands flossing may still not be enough if you do not have a professional cleaning every 6 months. If it's been longer than 6 months, please make an appointment with your Dentist.