Is Pregnancy Possible If The Intercourse Is During Menstruation?

hello my name is Marie..my period was supposed to come today but hasn't yet arrived.
i don't what day i conceived and would like some help please... the last time i was on my period was last month the 10th through the 15th and i had sexual intercourse without protect with my husband on all those days except for the 14th..would you be able to help me?