How soon can i tell im pregnant

Your weeks of pregnancy are dated from the first day of your last period.

This means that in the first 2 weeks or so, you are not actually pregnant – your body is preparing for ovulation (releasing an egg from one of your ovaries) as usual.

Your "getting pregnant" timeline is:

  • day 1: the first day of your period
  • day 14 (or slightly before or after, depending how long your menstrual cycle is): you ovulate
  • within 24 hours of ovulation, the egg is fertilised by sperm if you have had sex in the last few days without using contraception
  • about 5 to 6 days after ovulation, the fertilised egg burrows into the lining of the womb – this is called implantation
  • you're now pregnant

Find out more about trying to get pregnant.

You at 1 to 3 weeks

The first thing most women notice is that their period does not arrive.

Find out about the signs and symptoms of pregnancy

The most reliable way of finding out if you're pregnant is to take a pregnancy test.

Once you think you could be pregnant, it's important to get in touch with a midwife or doctor to start your pregnancy (antenatal) care.

You can do this by contacting:

  • your GP surgery – if you're not registered with a GP, you can find a GP
  • your local hospital's maternity unit – find maternity services

Things to think about

In the early days and weeks of pregnancy, you may not know if you're pregnant.

But you can do the following things:

  • take a folic acid supplement of 400 micrograms a day while you're trying to get pregnant and until the 12th week of pregnancy
  • take a vitamin D supplement of 10 micrograms a day
  • avoid some foods to protect against infections
  • stopping smoking is one of the best things you can do for your baby's health

You can get supplements from pharmacies and supermarkets, or your GP may be able to prescribe them for you.

If you want to get your vitamin D or folic acid from a multivitamin tablet, make sure the tablet does not contain vitamin A (or retinol).

You can get vitamin supplements containing folic acid and vitamin D free of charge if you're under 18, pregnant or breastfeeding and qualify for the Healthy Start scheme.

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Go to you and your baby at 4 weeks pregnant.

Page last reviewed: 12 October 2021
Next review due: 12 October 2024

October 08, 2018

By: Cara Terreri, LCCE, CD(DONA) | 0 Comments

How soon can i tell im pregnant
Whether you're trying to conceive (TTC) or you're done having babies (or anywhere else in between), knowing for certain if you are pregnant is a big deal. People who are actively trying to get pregnant are especially eager to know if they are pregnant as early as possible into the process. (Intra-uterine cameras anyone??) 

The question then becomes, just how early can you know? The short answer is: it varies. Depending on the method by which you use to determine your pregnancy, the length between conception and/or fertilization and knowing you're pregnant can be markedly different. Let's take a look at the possibilities.

Scientifically speaking

Fertilization of an egg (when the sperm successfully enters the egg and the development process begins) can occur anytime from a few hours up to five days after sex or insemination, depending on if ovulation (released an egg) has already happened and the egg is ready and waiting, or if ovulation happens after sperm are released. 

Gut instincts

Some people just know they're pregnant. These are the same kinds of people who just know it's going to rain (regardless of forecasts) or just know something is wrong. They have a strong sense of self and intuition, and most of the times, their "gut feelings" are correct. 

Physiological changes/physical symptoms: 3-4 weeks

Based on how you feel physically, there are a lot of different markers that can signal pregnancy. Unfortunately, many of these symptoms can also signal your period and normal monthly hormonal changes.

At around 4 weeks, if you are pregnant, you will not have a period. A missed or late period is often the first sign for many people, especially if you have a predictable cycle.

Other physical symptoms that could indicate a pregnancy include cramping, back ache, nausea, headaches, fatigue, heightened or sensitive smell, mood swings, and bloating. During this time, you may also experience "implantation bleeding," which is a light spotting of blood that can occur when the fertilized egg implants itself into the lining of your uterus. It can happen around 6 to 8 days after conception, but not everyone experiences the spotting. 

Tracking/charting: 3-4 weeks

If you are tracking and charting your fertility and symptoms using natural family planning methods and basal body temperature (BBT) readings, you may get good signs that you might be pregnant even before you miss your period. Ultimately, though, BBT readings are most likely to be more accurate for a positive pregnancy around the time you would expect your period.

Charting fertility involves daily recording of changes in BBT and cervical mucous, alongside tracking intercourse or insemination. When there is a rise in BBT, it can indicate that ovulation has occurred. If you had sex around the time of ovulation, pregnancy is more likely to take place. People who track BBT also look for a temperature dip around the time of implantation, as well as a second rise in temperature that happens around one week after ovulation. Both of these can happen normally, or can be signs of pregnancy. 

Pregnancy test (pee on a stick): 3 weeks

Pee-on-a-stick (POAS) pregnancy tests detect pregnancy by the amount of hCG (human chorionic gonadotropin) hormone levels in your urine. This hormone is present (and begins growing) at the time of implantation, which is 6-12 days after ovulation. Different POAS pregnancy tests have different levels of sensitivity. Some tests can detect as little as 10 mIU hCG in your urine. hCG doubles every 48-72 hours, so the longer you wait to test, the more hCG present, the more accurate the pregnancy test results. The earlier you take a pregnancy test, the less reliable the results. While you may get a positive POAS test at 3 weeks, it's a good idea to wait a week or two and test again to confirm. 

Blood test: 3 weeks

A blood test also can detect hCG and is more sensitive than a urine test. Since it can detect pregnancy as early as 6 days after ovulation, you could be able to confirm your pregnancy at/around 3 weeks. The downfall is that most doctors will not order a blood test this early to determine pregnancy unless there is a medical reason to do so. 

Ultrasound: 4-6 weeks

Traditional ultrasound (wand placed on lower abdomen) and transverse ultrasound (wand placed inside the vagina) can detect a gestational sac about one week earlier than it can show a fetus (baby). Transverse ultrasound is used when the gestational sac or baby cannot yet be seen using the traditional ultrasound. Most doctors wait until 6-8 weeks to use ultrasound to detect pregnancy, unless there is a medical reason to do so earlier. 

Doppler (detect heartbeat): 8-12 weeks

Detecting pregnancy by listening for the heartbeat with a doppler machine (wand placed on abdomen) cannot be used reliably until at the very earliest 8 weeks, but often closer to 12 weeks.  

How early did you find out you were pregnant? What methods did you use?

Tags

Pregnancy First trimester Pregnancy Test Am I Pregnant? Trying to Conceive

How can I tell if Im pregnant after 1 week?

Pregnancy symptoms in week 1.
nausea with or without vomiting..
breast changes including tenderness, swelling, or tingling feeling, or noticeable blue veins..
frequent urination..
headache..
raised basal body temperature..
bloating in the belly or gas..
mild pelvic cramping or discomfort without bleeding..
tiredness or fatigue..

Can you feel pregnant after 2 days?

This is a difficult concept to grasp at first, and many people wonder if there are any symptoms during the first 72 hours of pregnancy. Again, because of the way pregnancy is calculated, you won't feel any symptoms of being pregnant during those first three days—or possibly three weeks.