I have an unprotected sex. After 2 days I'm period . During sex he dun release his spum into mine . Can I get pregnant ?

There is always a possibility of pregnancy with unprotected sex.

Are you saying that you have had your period (or are currently on your period) since the encounter?

Did he use the pull-out method?

IF you have had your period and he used the pull-out method (not an effective form of birth control, but does take the chance down a bit), then chances are slim that you are currently pregnant.

Please, see your doctor about getting better birth control.