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8. Raised basal body temperature: You may very well be pregnant if your basal body temperature remains elevated even past the time your period is due and does not decline to preovulatory levels. When you conceive, the egg is fertilized in the fallopian tube, after which it takes about a week to travel to the uterus, where it will implant. It is at this time that your body is finally able to detect that you are pregnant. When hCG is released, women often experience a third temperature rise, not as dramatic as the first, but can usually be seen anywhere from about a week to 12 days after the first temperature rise at ovulation.
9. Missed period: This may be your first sign of pregnancy, especially if you're normally quite regular. Combined with other positive signs you may be sure you're pregnant, even before the test stick turns blue.
10. A positive pregnancy test: If your period is at least a day late, and you're ready to know the truth, you may want to take a home pregnancy test. A urine pregnancy test can be accurate as early as 10 to 14 days after fertilization. If you can't wait until a missed period, a blood pregnancy test can be accurate as early as 8 to 10 days after fertilization. Keep in mind that pregnancy tests are not 100 percent foolproof -- not even blood tests. If you have a negative result and still feel pregnant, be sure to retest a week later -- and check in with your care provider.