How Long Until You Can Tell You Are Pregnant


Generally, a woman can take a pregnancy test two weeks after conception. During this time, the fertilized egg gets ready to implant itself in the lining of the uterus. A woman or her doctor can detect signs that she is pregnant by testing her blood as early as 10 days after conception as well.

While blood tests can be taken earlier, home pregnancy tests usually don’t detect hCG levels until at least 14 days after conception in order to get accurate results. If a woman takes a pregnancy test before the 14-day period has passed, it may not be sensitive enough to detect hCG levels accurately and will likely provide an unreliable result.

It’s worth noting, however, that pregnancy symptoms —including fatigue, tender breasts and nausea—typically do not start showing up until about five or six weeks into the pregnancy (or seven weeks from the last menstrual period), although everyone is different and symptoms vary from person to person. Therefore, even if women get accurate results from their home pregnancy test or other screening methods such as ultrasounds or physical exams shortly after conception, they may not experience any visible signs of being pregnant until many weeks later.

Early Symptoms

Typically, most women do experience some form of early symptom between two to four weeks after conception. This is about the same time that a missed period might be noticed, as well as nausea and fatigue due to changes in hormone levels. However, other signs such as breast tenderness, food craving, bloating, and mood swings can occur even earlier. A positive pregnancy test result will confirm whether you are pregnant or not. It is important to note that home pregnancy tests are known to be particularly sensitive these days and can usually detect very low hCG levels in the urine as early as seven days after conception. Therefore it is possible to get an accurate result sooner than expected rather than waiting for a missed period occurring around fourteen days after conception. As days pass by, your body will produce higher hCG levels which will be confirmed with a urine or blood test by your doctor’s office.

Tests for Pregnancy

When trying to find out whether or not you are pregnant, one of the first steps is to take a pregnancy test. There are many different types of pregnancy tests available, with accuracy levels ranging from very accurate to slightly unreliable. It’s important to understand which kind of pregnancy test you should take and when in order to get accurate results.

The most common type of home pregnancy test is a urine test that measures the amount of human chorionic gonadotropin (hCG) – a hormone made by the placenta during pregnancy – in your system. These tests can be taken anytime after a missed period and generally have an accuracy level of about 97-99%. Most will give results in 3-5 minutes, but there are some newer digital tests that can provide results within 1 minute.

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Blood tests measure hCG levels as well, but these tests may provide more accurate and earlier detection as hCG concentrations tend to be higher than those found in urine. Furthermore, blood tests can measure several other hormones associated with pregnancy. These tests should be taken 10-14 days after conception and may be replicated later on for further clarification.

Although other methods exist, such as abdominal scans, they should only be conducted after speaking with your doctor or medical professional. Make sure you discuss your options thoroughly so that you make an educated decision based on your preferences and needs. Ultimately, all forms of home-testing have their potential pros and cons; it’s up to the individual to do the research necessary to decide which type is best for them!

Blood Testing

Advantages: A qualitative blood test to detect the hormone hCG is perhaps the most accurate way to confirm a pregnancy. Unlike other methods of detecting pregnancy, a blood test has the potential to detect smaller amounts of hCG than any home-based test and can identify a pregnancy at as early as 7-10 days after fertilization. Furthermore, accuracy levels are far higher with a blood test than other methods of testing.

Disadvantages: Although generally reliable, the results of a qualitative blood test for hCG may provide false-positive results due to health conditions beyond simple gestational status including ovarian cysts and pituitary tumors that produce physiologically similar compounds specifically in low numbers below what could be considered an evolutionary threshold for conception. Additionally, many healthcare providers view a qualitative hCG test as an unnecessary additional expense and prefer to wait until there is more tangible proof before investing in extra tests.

Ensuring Accuracy

To accurately determine whether or not you are pregnant, the best time to take a pregnancy test is usually one week after a missed period. However, if it has been two weeks since you have had unprotected sex and your period still hasn’t come, then this may be an indication of possible pregnancy and taking a test would be more appropriate at this point.

When buying and storing the test, this also affects the accuracy. It is best to buy a quality pregnancy test kit from an approved supplier and check that it has not expired. Make sure that the stored kit is kept in a cool dry place away form direct sunlight or heat sources to ensure accurate results when testing. If possible, store the kit in its original unopened packaging until use.

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For the most reliable results avoid drinking any fluids before taking the test as this could affect the results presented. Neither decaffeinated nor caffeinated drinks should be consumed prior to using the pregnancy test.

Seeing a Doctor

If you are wondering how long it will take to determine if you are pregnant, it is important to see a doctor as soon as possible. Although at-home pregnancy tests can be an easy and convenient way to find out if you are expecting, they are not always accurate and should not be used as a substitute for medical advice from a professional. The accuracy of the test increases the further along in the pregnancy that it is taken, so visiting your doctor will provide more certainty about your results. Your doctor can also assess any potential health risks associated with pregnancy early on and recommend lifestyle changes or treatments, if necessary. Ultimately, seeing a doctor is essential for determining the accuracy of conception and helping you to form a plan for staying healthy during your pregnancy.


The answer to how long until you can tell you are pregnant depends on when a woman suspects conception occurred and when she should take a pregnancy test. Generally, if a woman is experiencing common signs of early pregnancy such as fatigue, spotting or tenderness in the breasts then it is recommended that she takes a pregnancy test within 7-14 days after conception. However, the results may still be accurate up to 21 days later. Depending on the accuracy and sensitivity of the pregnancy test being taken, false positives or negatives may occur before this time. It typically takes up to two weeks for HCG levels (the hormone measured by most pregnancy tests) to show after implantation and accurate results becoming detectable in the body. In some cases, more sensitive tests may return positive results before two weeks have passed since conception but are not officially considered due until doctors notice fetal heartbeats on ultrasounds during the first trimester.

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