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Do you know when you ovulated? Do you chart your basal body temp and cervical fluid? If not do you recall when you had fertile fluid- creamy or eggwhite in consistency? This could help us pinpoint O better. Otherwise, you really don't know when O occurred as it can change cycle to cycle based on what is happening in your life: illness, injury, stress, travel, diet and exercise changes, etc. can all delay O and therefore delay AF. But, if you expect AF on the 14th and we assume an average length luteal phase of 12-14 days, then we might assume O to have occurred on Feb. 1st-3rd. So, that would make you 5-7dpo today. Implantation occurs between 6 and 12dpo, but 84% of the time between 8 and 10dpo. So the odds are that if you are indeed pregnant that the embryo has not yet implanted. The embryo does not start producing measureable amounts of hCG until it has implanted. When did you say you had the blood test? It is very likely that it was done too early and I'm surprised that a doctor even ordered one considering where you are in your cycle. Strange. Once enough hCG has been produced then symptoms show up. So your symptoms at a couple of dpo were also too early. IF you ovulated when you think you did, then an HPT will be accurate in a week, though if implantation was on the earlier side then you could get accurate results a bit earlier. I would suggest getting a pink dye, NON +/- type test like First Response Early Response and try testing with first of the morning urine in a few days. If you get a negative, then try again a few days after that- always with first of the morning urine. Good luck and keep us posted! You might find some extra support by posting in one of the other TTC threads in this forum where other women are waiting to test as well!