Can i pregnant if im bleeding for 4 days and it is light ?

Light period: With intercourse or genital contact with semen, pregnancy is always possible. If your periods are usually heavy with clots, the light flow may occur if a clot blocks the cervical canal. Wait a week, and obtain a serum HCG test to be certain about pregnancy.

Yes.: If you don't want to be pregnant or a disease, don't have unprotected sex or abstain. Some days in your cycle, pregnancy is less likely, but the risk is never zero, and chances vary during the cycle and also vary between people. What is less risky for one, may not hold true for another person. Don't chance it.