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A Complete Guide on 1st Week Pregnancy Symptoms

Dr. Manisha Acharya
Reviewed by Dr. Manisha Acharya ,
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This information has been reviewed and approved by an experienced fertility specialist at Indira IVF to provide accurate and up-to-date guidance for our readers.

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Last updated: July 08, 2026

Synopsis

In the 1st week of pregnancy, women may feel excited, anxious and wonder how to find out if they are actually pregnant. The beginning of the pregnancy starts from the first day of the last menstrual cycle, so if you are not pregnant, you may not experience symptoms. It is possible that conception may take place early or the implantation process has just begun; thus, you might experience some changes or have symptoms that tell you if you are pregnant. You may not experience symptoms during the first week of pregnancy, but knowing the signs can help you identify changes as soon as they show up. This article highlights these common first-week signs of pregnancy and what to do in detail.

Earliest Pregnancy Symptoms

  • Implantation bleeding is a common early sign of pregnancy. This is when the egg attaches itself to the uterine wall after being fertilised, resulting in light spotting. Bleeding is either pink or brown, much lighter than a regular menstrual period, can last from several hours up to 2 days, and doesn't usually contain large clots. Not every woman will have implantation bleeding during their pregnancy. Some women will experience mild cramping in the pelvic area during implantation. These cramps are mild, short, and felt in the lower abdominal area.
  • Hormonal changes also affect your ability to taste and smell. Some women will experience strong cravings for food that they did not previously crave. They do not want to eat their previously favourite foods. Some women may have a "metallic" taste in their mouth. Women may also have an increased sensitivity to odours.
  • You may feel more tired than usual; this is an early pregnancy symptom and may be due to increased progesterone levels, which can lead to decreased energy, weakness, and sleepiness.
  • Rapid hormonal changes can also affect your emotions. Common mood changes experienced by a woman include anxiety, irritability, and an increased tendency to cry.
  • Breast tissue is immediately affected by hormonal changes. You may notice that your breasts feel sore, tingly, swollen, and larger. These same signs and symptoms are often seen right before a menstrual period; however, with the onset of pregnancy, you may notice them more.
  • Some women will notice an increase in the secretion of thin milky-white discharge from their vaginas during early pregnancy. Normal discharge from the vagina is thin, odour-free, white, and clear if you are pregnant.
  • Some women notice an increase in the frequency of urinating during early pregnancy due to hormonal changes and more blood flow to the kidneys.
  • When progesterone levels rise, they can slow the digestive system, leading to bloating, fullness, mild abdominal discomfort, and gas.
  • Morning sickness appears around the 6th week of conception; however, many women may feel moderately nauseous as early as their 1st week of conception.
  • If you are tracking the changes in your Body Basal Temperature (BBT), you will start noticing many changes in the BBT after you have ovulated. For some women, their BBT may remain elevated for an extended period, indicating that the body is still undergoing hormonal changes. The sustained elevated BBT occurs, on average, two or more weeks after ovulation, which is usually an indicator of pregnancy.

When Should You Take a Pregnancy Test?

  • To ensure accuracy, wait until the first day of your missed period.
  • Use the first morning urine sample because it has the highest levels of hCG.
  • If you receive a negative result but still have not received your menstrual cycle after 48-72 hours, consider retesting or consulting with your physician about further evaluation.
  • A doctor's clinic can conduct a blood test for pregnancy, which is considered more accurate than a home urine test (hCG).

What to Do If You Think You Are Pregnant?

If you suspect that you may be pregnant, you should:

  • Use a home pregnancy screening test.
  • Call your healthcare provider and make an appointment to confirm pregnancy.
  • Begin a prenatal vitamin (after doctor’s consultation) if you have not started already.
  • Rest adequately and engage in some light exercise as approved by your physician.

Conclusion

In the first week of pregnancy, the body is undergoing slight hormonal changes, which makes it difficult to distinguish an actual pregnancy from PMS. If your symptoms are obvious enough that you can distinguish them as possible signs of pregnancy, you must visit a doctor. Some women do not experience any symptoms. Therefore, a definite diagnosis of pregnancy is made when you have a missed period and have completed either a home pregnancy test or a blood test.

Frequently Asked Questions

What are the chances of having a negative pregnancy test and still being pregnant?

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There are instances where your negative pregnancy test is due to testing too early, so it might be worth retesting in a few days.

Does every woman get implantation bleeding?

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It typically appears as light pink or brownish spotting and lasts for a short time. Not every woman experiences implantation bleeding.

When should I visit a doctor if I get a positive pregnancy test?

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You must consult a doctor immediately after a positive pregnancy test to get your prenatal checkup.

Do all women experience signs of early pregnancy?

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Some women experience signs of early pregnancy, while others do not experience any until much later into the pregnancy. Either type of experience is normal.

What is the earliest pregnancy symptom?

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A missed period is the most common early symptom of pregnancy. Some women might also experience weakness and breast soreness during early pregnancy.