My period is not for another two weeks but i think i am one week pregnant. when is the earliest i can test?

Can or should: The urine pregnancy test relies on hormones made by the developing embryo after implantation.Before implantation (days after conception), there is no hormones to test.In the early days after implantation, the level may be too low to turn the test positive.At the point you are late, there might be enough to test positive, but early on this can still be negative.

Too soon to test: Conception occurs within day or so of the sex. It takes about 3 weeks for the embryo to make enough HCG for a positive pregnancy test. Blood test may be done a day after a missed period. Home pregnancy tests should be done 4-5 days after the missed period. If the result is negative repeat the test in 4-5 days. Use first morning urine and follow instructions for the test carefully.