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Doctor insights on: False Negative Pregnancy Test Breastfeeding

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What are the odds of false negative pregnancy test while breastfeeding?

What are the odds of false negative pregnancy test while breastfeeding?

Pregnancy Tests: Pregnancy tests are designed to look for the presence of beta-hcg which is a hormone produced by a conceptus and acts to maintain a pregnancy. The level rises very quickly after conception and can be detected as early as 1 week after conception and almost always by 2 weeks after conception. False negatives occur during this 2 week period. Breastfeeding does not impact this hormone. ...Read more

Dr. Linda Callaghan
4 doctors shared insights

Pregnancy (Definition)

When your due date arrives, you will be more than ready to have your baby! Most women deliver the baby somewhere between 37 and 42 weeks. According to the American College of Obstetricians and Gynecologists, only 5% of babies arrive on the exact due date. Approximately 7% of babies are not delivered by 42 weeks, and when that happens, it is referred to ...Read more


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2 months postpartum. Not breastfeeding. Why haven't i had my period yet? 3 negative pregnancy test! and could i still be pregnant?

2 months postpartum. Not breastfeeding. Why haven't i had my period yet? 3 negative pregnancy test! and could i still be pregnant?

Time to adjust: It takes time to reset your periods after having a baby. If you had very irregular or widely spaced periods before your baby came, you may be going back to that model. If your periods were quite regular, remember that you could be ovulating, and get pregnant as a result of unprotected sex during ovulation. So do be careful, but remember that a new baby is a lot for your body to adjust to! ...Read more

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I had a negative pregnancy test and I am breastfeeding, but I am 1week4days late after 42 days,I have heavy bleeding bright red blood. Is this normal?

I had a negative pregnancy test and I am breastfeeding, but I am 1week4days late after 42 days,I have heavy bleeding bright red blood. Is this normal?

Not unusual: If your period was late, there may have been additional build up of uterine lining in that time, leading to particularly heavy period this time. You are not pregnant, so not to worry. Make sure you are getting adequate iron in your diet to have enough for your blood loss and feeding your baby. May need a temporary iron supplement. ...Read more

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Breastfeeding my 12 month old with no period. Lower abdominal and back cramps, night nausea, painful sex with negative pregnancy test. Any help?

Breastfeeding my 12 month old with no period. Lower abdominal and back cramps, night nausea, painful sex with negative pregnancy test. Any help?

Low estrogen state: As long as you are breastfeeding your body will remain in a low estrogen state with minimal pituitary activity. That accounts for the thinning of the vaginal walls and painful intercourse that can be addressed with local estrogen cream or breastfeeding cessation. I also hope contraception is being used as an egg can still "pop out" with attendant pregnancy. See your GYN MD for further advice & Rx. ...Read more

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How often could a false negative pregnancy test occur?

How often could a false negative pregnancy test occur?

Not often: Pregnancy tests are quite accurate. A pregnancy test should be accurate by about 12 days after your ovulation, so by the time your period is late the test should be accurate. ...Read more

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What is the probability of a false negative pregnancy test?

What is the probability of a false negative pregnancy test?

See below: When done in accordance with manufacturer's direction, both sensitivity and specificity are high. ...Read more

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What are the chances of getting a false negative pregnancy test?

Rare: If you do a pregnancy test accurately and at the right time, the chance of a false negative test is less than 1%. It is important to do it when you have missed your period. Doing it too early, is the most common reason for a false negative pregnancy test. ...Read more

Dr. Scott Keith
4 doctors shared insights

Breastfeeding (Definition)

Breastfeeding is providing nutrition to an infant using breat milk either directly by infant latching and sucking on the nipple or by feeding via bottle with expressed breast milk (when baby has difficulty suckling). Breast milk is the best milk for any baby but ...Read more


Dr. Stephen Sudler
482 doctors shared insights

Pregnancy Test (Definition)

A pregnancy test measures a hormone called human chorionic gonadotropin (HCG). HCG is a hormone produced during pregnancy. It appears in the blood and urine of pregnant women as early as ...Read more