Implantation Symptoms: 5 First Common Signs It Occurred

November 2022

Implantation symptoms like abdominal pain and pinkish discharge can occur when the fertilized egg attaches to the woman's uterine wall. It is here where the baby will grown and develop throughout the entirety of the pregnancy.

Symptoms related to implantation tend to be very subtle, and therefore, many women do not take notice of them, even if they are actively looking for signs of pregnancy. Even so, the first sign that you should be aware of is the appearance of pinkish discharge in small quantities. It usually appears about 3 days after conception (when you have had sex).

The most accurate way of confirming implantation and pregnancy is by completing a pregnancy test. This should be done after your period is delayed. Learn about how to complete an over-the-counter pregnancy test and how to interpret results.

Signs that implantation has occurred

The most common signs of implantation include:

  1. Mild abdominal bloating on the sixth or seventh day after the fertile period
  2. Pinkish discharge up to 3 days after sex
  3. Fatigue and drowsiness
  4. Mild but persistent headache
  5. Sore and swollen breasts

About 4 weeks after implantation, first symptoms of pregnancy will normally begin to emerge. These usually include morning sickness and a late period. Learn more about the first symptoms of a pregnancy.

For implantation, and the eventual pregnancy, to happen, a viable sperm must first meet with an egg. This will most likely occur during the woman's fertile period. Eggs will remain viable during the fertile period for 12 to 24 hours, as they travel to the uterus, while sperm can survive for 48 to 72 hours.

Enter your information in the calculator below to learn when your next fertile window is:


How to confirm a pregnancy

To confirm a pregnancy, you can opt to complete an over-the-counter pharmacy test first. If this test shows a positive result, you should confirm it with a blood test that evaluates your beta-HCG levels. Either of these tests can be completed as soon as your period is late.

In addition, another way of confirming pregnancy is by completing an ultrasound. An obstetrical ultrasound can identify the presence of an embryo and can pick up the baby’s heart beats. It is important to be followed by an OBGYN once pregnancy is confirmed to ensure your wellbeing as well as the baby’s wellbeing throughout your pregnancy.

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Edited by Tua Saude editing team in November 2022. Medical review completed by Dr. Sheila Sedicias - Gynecologist in November 2021.


  • FEDERAÇÃO BRASILEIRA DAS ASSOCIAÇÕES DE GINECOLOGIA E OBSTETRÍCIA. Manual de Assistência Pré-natal. 2014. Available on: <>. Access in 03 Dec 2019
  • CLEVELAND CLINIC. Pregnancy: Ovulation, Conception & Getting Pregnant. 2019. Available on: <>. Access in 03 Dec 2019
Show more references
  • AMERICAN PREGNANCY ASSOCIATION. Pregnancy Symptoms – Early Signs of Pregnancy. 2019. Available on: <>. Access in 03 Dec 2019
  • NATIONAL HEALTH SERVICE. Signs and symptoms of pregnancy. 2017. Available on: <>. Access in 03 Dec 2019
Medical review:
Dr. Sheila Sedicias
Physician graduated in Mastology and Gynecology by UFPE in 2008 and member no. 17459 of CRM-PE, Brazil.