Sooooo

Sooooo why my bd don't think I'm pregnant ?? If we had sex on the 12 & again on the 29th August & I missed my period for 2wks and then I went to the dr today and got blood work done and I go back on wenesday @ 3 for a ultrasound and etc ! He think it's crazy that the doctor to wanna see me again this early like bitch caculate the dates  ! 5 or more people telling me that my dates are right and this app is to ! My last mentrual was On 8/7 ! Am I correct ladies somebody please tell me I'm not crazy