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Home › Daylily Mag › 5 weeks pregnant, 7 weeks gestational age
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5 semaines de grossesse

5 weeks pregnant, 7 weeks gestational age

December 17, 2025 Clemence Plantevin

At this stage, your 5-week-old baby measures approximately 2 mm, the size of a small sesame seed, but its development is fascinating.

5 weeks pregnant (7 weeks gestation)

Welcome to the 2nd month of pregnancy, also known as the second month of the first trimester !

At 5 weeks pregnant (7 weeks gestational age) , shortly after the 4th week of pregnancy, your pregnancy test is now positive, marking the true beginning of this new adventure. You gradually realize that your body is harboring a new little life. The future baby is settling in, developing rapidly, your embryo is entering a key stage of its development, and your body is doing everything it can to protect it. This is a time when you may experience more fatigue, morning sickness , even some mood swings or other symptoms typical of early pregnancy: rest assured, all of this is normal and temporary.

Baby development at 5 weeks of pregnancy

At this stage, your 5-week-old baby measures approximately 2 mm, the size of a small sesame seed, but its development is fascinating.

5 weeks pregnant

Here's what's happening in your belly, inside your uterus:

  • The neural tube , formed the previous week, begins to close. It will later become the brain and spinal cord.

  • The heartbeats appear: within minutes, the primitive heart of your future baby contracts for the first time around the 22nd day after fertilization.

  • The digestive system begins to develop: the outline of the stomach, liver and pancreas is already taking shape.

  • The sexual organs also begin their formation, even if they are not yet differentiated.

  • The umbilical cord forms, ensuring the vital connection between your baby and your body.

Your future baby is now floating in the amniotic cavity, safe and sound, nourished and oxygenated by the developing placenta.

What happens in your body at 5 weeks of pregnancy

Your baby is developing, but your body continues its magical transformation, and the first stages will soon be confirmed by an ultrasound , often scheduled during the first few weeks of amenorrhea . Hormonal changes are intensifying: the hCG hormone produced by the placenta increases, and its level continues to support the pregnancy, causing some typical side effects.

Common symptoms include:

  • more pronounced morning sickness ,

  • A doubled bust, sometimes sensitive

  • significant fatigue , hence the importance of resting as much as possible .

  • a frequent urge to urinate , because your uterus is starting to put slight pressure on the bladder

  • Sometimes unusual food cravings or difficulty eating certain foods are observed.

  • and sometimes mild heartburn , linked to progesterone slowing down your digestive system .

Don't worry: these sensations are normal, and even if some pains might seem surprising, they have no connection to childbirth at this stage. They show that your body is adapting wonderfully to this new phase of your pregnancy . If any symptoms become bothersome, don't hesitate to talk to your healthcare professional, whether it's your doctor or your gynecologist; they are there to support you. Reading reliable information can also help you better understand what you're going through.

Taking care of yourself during this time

Discover these tips and learn to listen to your body's needs.

Your body is working hard: it's creating life! Even if you haven't gained any visible weight yet. So, allow yourself some rest and a good dose of self-care. Every mother experiences these moments differently, especially during her first pregnancy.

  • Adopt a balanced diet, essential for pregnant women , to support your energy and the baby's development. Rich in vitamins and minerals, to support your energy and the baby's development.

  • Drink water regularly, it also helps your digestive system function better.

  • Try to rest as much as your schedule allows; your body often sends you the right signals.

And as your skin begins to stretch, it's the perfect time to introduce an anti-stretch mark routine to prevent stretch marks from appearing during your pregnancy. It's recommended to use a pregnancy stretch mark cream to moisturize the skin and a pregnancy stretch mark oil to nourish it.

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Anti-Stretch Mark Ritual

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First Quarter Box Set

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