On june of 2005 I had sex with my ex. I believe is was with protection. Then I stop seeing him because my husband came to this country.Well of course i was having sex only with my hubby. I stop having my period on november my LMP was october 30, 2005.I had preterm birth with fraternal twins at june30,2006 they were 35 weeks. Can this babies be my ex boyfriend making a 12 month pregnancy. or my husband.