i had sex with my boyfriend on the 23 of dec. and between the 25 and 28 his condom fell of twice inside me and he had to finger me to get it out when he pulled it out it was inside out and the last time we had sex we did it with no condom n he pulled out rite before he busted i then was waitin for my period that is due on about the third of jan i got it for bout to days didnt get it for a day then got it again is there a chance i can be pregnant?