HAD PERIOD NOV 12 HAD UNPROTECTED SEX NOV 18TH NOV 21 NOV 24

I HAD MY PERIOD NOV 12TH I CAME OFF LIKE THE 15 OR 16TH I HAD SEX NOV 18TH THAN I HAD SEX WITH MY BOIFRIEND NOV 21 NOV 24 IN HE CUM INSIDE OF ME.BUT I TOOK A HOME TEST DEC 1 IN IT CAME OUT NEG THEN ME IN MY BOIFRIEND MESS AROUND AGAIN IN SO ON . I FOUND OUT I WAS PREG DEC 14TH WITH A OTHER HOME TEST WHICH WAS POS. IN THAN I WENT TO DOCTOR DEC18TH THEY SAID I WAS PREG ALSO.SO WHO WILL I BE PREG BY BOIFRIEND OR OTHER GUY. KNOW APRIL 25.2007 IM 23WKS 3 DAYS