<s>[INST] Hello, I was at the emerge on May 1st and had a urine pregnancy test as it came back negative, on May 4th i did two over the counter test one resulted with two lines (pregnant) and the othe other clearblue test told me positive 3 plus??? how far along can I be with a negative test two days prior?? [/INST] HAI WELCOME TO HCM IMPLANTATION OF EMBRYO TAKE 14 DAYS FROM OVULATION AND HCG PRODUCTION.IT IS POSSIBLE FOR AN POSITIVE TEST AFTER NEGATIVE TEST WHICH IS DUE TO HCG PRODUCTION OF PLACENTA BY AN DEVELOPING EMBRYO.TAKE FOLIC ACID REGULARLY.PELVIC SCAN WILL REVEAL FOETAL POLE WITH HEARTBEAT BY 6,5 WEEKS. </s>