negative blood test

I got my results today it was <2 Dr said it has to be 5 to be positive. . I got my blood drawn before my missed period. AF was suppose to come yesterday but no show. I've been having slight cramps on and off since ovulation and  my cycle days are weird from 32 to 43. Is there still a chance for me to be pregnant?? Especially if I got blood drawn before missed period?