my period started the 25th oh july ended almost the 30th n I made love on wendsay agugust the 3rd me n my boyfriend did not use protection we did it a lot of times n for a long time he came on me various times is the a possibility that I can get pregnat? My boyfriends sister told me dat my ovulation started the 6th of august n ended the 10th but am not sure if she's rite help plz