My period is three days late then i started bleeding a little the night before then and little more in the morning i thought i could be pregnant ?

Common problem: Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. Infections ; hormonal changes can cause spotting. If there is a concern for pregnancy then do a home pregnancy test . There are many options available to help regulate the menstrual cycle. Schedule a visit.

Pregnancy possible: If you are sexually active (and not using any form of birth control -- pill, condom, iud, etc), then it is possible you could be pregnant.