Yes, that's what I mean.
I don't think that anyone here can say with 100% certainty that, no there is no chance. Whenever you have unprotected sex, you could get pregnant, but I think based on the timing you indicated, the chance is small.
slim? you mean small chance but there is a chance?
Because your periods are irregular, you are probably ovulating irregularly, so it's difficult to answer your question with certainty. In most cases, women are least fertile right before their period, so your chances of being pregnant from your last intercourse are probably slim. Are you trying to get pregnant?
as of now i don't want to go to the doctor. and what i want to know is if there is a possibility that i can be pregnant even though my last S.intercourse is 3 days before my period..
Did you try a home pregnancy test? If you did an came out negative, make an appointment to your doctor so they can get a blood work for you just to make sure if you're pregnant or not..