I just had the taste of blood in my mouth and i looked and there was some in my saliva what could it be there wasn't much?

Gum problems: Typically, any blood coming from the mouth is related to a number of gum problems. See a dentist for a complete evaluation.

Gingivitis: It's a mild inflammation of the gums. Do not procrastinate, see you dentist for evaluation, cleaning and prophylaxis. It could be more advanced gum disease, periodontitis. Periodontitis occurs when inflammation/infection of the gums (gingivitis) is untreated or treatment is delayed.

Periodontal ?: Most likely you have some form of periodontal (gum) disease. Either the milder form called gingivitis, or the more advanced and serious type known as periodontitis. Less likely are an accidental cut or abrasion, or food impaction causing gum inflammation and bleeding. Even less likely are some medical problems. In any case, you need to see a dentist for an evaluation and appropriate treatment.