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Missed Late Period Negative Pregnancy Test

Do you have a negative pregnancy test, but no period - Could you still be pregnant with a negative pregnancy test?

Negative Pregnancy Test

You could be pregnant even though your pregnancy test is negative. It takes on average 14-16 days after ovulation and fertilization for the pregnancy test to turn positive. If you ovulated late and implantation happened late then it could take longer for the pregnancy test to become positive. If your period hasn't come, repeat the pregnancy test in a couple of days to see if you are pregnant or not.

Your period is late, you're having pregnancy symptoms, but you are still getting a negative pregnancy test. Could you still be pregnant? If you're not pregnant, why is your period late and what should you do about it?

The biggest reason for getting a negative test result is miscalculating your ovulation and your next period. That is why when TTC it is important to chart your fertility and ovulation.

The average menstrual cycle is 28 days. If you are fortunate enough to have a regular 28 day cycle, then ovulation usually happens around cycle day 14-15. You would count 28 days from the start of your last menstrual cycle to determine when your next period is due. The problem with this method is two-fold. One, many women do not have a 28 day cycle and two, this does not account for variations in ovulation dates and more importantly the date of implantation.

Pregnancy tests and implantation

Another factor to consider is when implantation occurs. You will not get a positive urine pregnancy test until well after implantation occurs, about 5-6 days after implantation. Although hcg is produced almost from conception, it is not until the egg implants that the hcg can be released into the woman's blood stream in sufficient quantities to result in a positive pregnancy test. The time implantation occurs varies. Implantation can occur anywhere from 6-12 days past ovulation, and a urine pregnancy test will usually not become positive until 5-6 days after ovulation.  Some women may notice slight spotting or bleeding, known as implantation bleeding, when the egg implants.

Other causes for a pregnancy test to not detect pregnancy

Other causes for a false negative pregnancy test include:

  • diluted urine,
  • expired test,
  • improper testing, and
  • ectopic pregnancy.

If you have received a negative test result a day or two after your period is due, it may be as simple as testing too early or urine that was too diluted. If your period hasn't come, retest again in several days a week, and if still negative consult your doctor.

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