My boyfriend fingered me around 3 years ago. a little blood came then and i felt a little comfortable. but now i am getting married to someone else. is it possible for me to bleed during first intercourse but i think my hymen is torn. its imp for me?

Maybe. It would depend on how much hymen remains and whether it interferes with intercourse without further tearing. Some women are born without one or loose it in non sexual activities. Only you know if you have had past partner sex. Bleeding at sex is not a realistic marker for virginity although many assume it is so. There are other forms of partner sex that would not alter a hymen.