<s>[INST] My name is Janet. I took a pregnancy test and It was positive but then I went to my DR. and he took a  blood test. Then he called me the next day and told me it was positive then he called me an hour later and told me it was negative so How do i know???? I have all the sighs of being pregnant. [/INST] Hello dear, I understand your concern. In my opinion the urine pregnancy test is usually positive a week after missed period or around 3 weeks after the intercourse. As the urine pregnancy test was positive the pregnancy is likely. But as there is conflicting report by blood test of Chat Doctor I suggest you to repeat the urine pregnancy test and ultrasound also helps in confirmation of diagnosis. Best regards.... </s>