I am four days delayed . I have white discharges for the past few days. My boyfriend and I did it 8 days after my menses and used withdrawal as a method of contraception. Should I be worried about being pregnant?

Yes, you should be worried. Any time the penis enters the vagina there is a risk of pregnancy.

The withdrawal method is the least effective method of contraception. You are now playing the waiting game and have to wait until your period is at least 2 weeks late before testing using first morning urine.