Is there a possiblity of getting pregnett iff ..?

i had a day ago withh my boyfriendddd. and yes we used protection . but the condom was like bout to come off a little tiny bit . but thee tipp of his was still covered with the condom i mean the whole thing was covered but the bottom part of his wasnt coverd as much &&; hee nutted . is there a possible chance of gettting pregnet ?