So I was supposed to start my period on the 13th.I have NEVER missed a period and I have regular periods.I have taken multiple tests,and they said negative all but one.It was somewhat faint.My husband believes he cannot have children.Before me,he was with someone for two years and they tried but he never got her pregnant.Then they broke up and she got pregnant with someone ese;so he thinks it is him.I don't know what to do when it comes to the tests though.I thought about talking to my doctor about getting a blood test done,but they are stubborn with tests like that.Help!