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5 Weeks Pregnant: Week-by-Week Guide

5 Weeks Pregnant: Week-by-Week Guide

Congratulations! You’re five weeks pregnant. At this stage of your journey, new developments are beginning to unfold. Check out this week-by-week guide to find out what’s in store for your baby and your body in week five of pregnancy.

  • 5 weeks pregnant is which trimester? First trimester
  • How many weeks of pregnancy are left? 35 weeks
  • 5 weeks pregnant is how many months? You’re beginning your second month.

With week four of your pregnancy complete, you’re on week five. Enjoy it, as week six is on the horizon!

One of the most exciting things about pregnancy is how many changes you’ll experience with your little one over the span of just seven days! Here are some tips and tricks to keep on top of all that’s happening.

Your baby at 5 weeks pregnant:

What’s happening in there

  • Your baby is the size of an apple seed.
  • You’re officially into the first trimester.
  • The countdown continues: You've got 35 weeks to go!

What happens during the 5th week of pregnancy?

  • You missed something: If you haven’t already noticed, you may be late with your period. It’s time to head to the pharmacy and pick up a test kit.
  • Hello, hormones: You’re starting to feel the first hormonal effects, whether that’s sore breasts, fatigue, or that nausea you’ve heard so much about.
  • Baby's forming: The placenta is under construction and in a position to start providing nourishment to your little creation.
  • Little layers of wonder: This week, the embryo divides into three layers called germ layers. The outer layer will become the brain and nervous system, skin, eyes, ears, and hair. The inner layer will form the lungs, intestines, bladder, and liver. And the middle layer will become the circulatory system, reproductive system, kidneys, cartilage, muscles, and bones. A healthy diet will nourish your baby’s growth, complemented with a prenatal vitamin that has DHA to support baby’s brain development.

How does my baby look at 5 weeks?

  • A baby at five weeks is about the size of a citrus seed and is quickly developing.
  • Your baby looks a little like a tadpole.

What should I be feeling at 5 weeks pregnant?

  • Don’t expect to suddenly gain weight and see a baby bump. This early, you’ll see little change to your tummy, and if you have particularly bad morning sickness, you might even lose weight.
  • Your breasts will begin to ache.

How big is my baby at 5 weeks pregnant?

5 Weeks Pregnant

Baby Weight Too tiny to weigh
Baby Length Super small
Baby Size Comparable to a citrus seed

Week 5 pregnancy symptoms

During week five of pregnancy, your body is changing quickly. As your baby grows, you will too, and there are certain pregnancy symptoms you may experience at this time.

8 common week 5 pregnancy symptoms

  1. You’ll go through unusual cravings or just desire more of the things you like.
  2. Your mouth may produce excessive saliva.
  3. You will be fatigued.
  4. If you don’t already have it, you’re likely to be feeling the effects of morning sickness very soon.
  5. You’ll have to pee more. Frequent urination is par for the pregnancy course.
  6. You will probably experience increased vaginal discharge, which may continue throughout your pregnancy. 
  7. Your breasts may continue to be sensitive and swollen.
  8. You may have a heightened sense of smell, what’s known as “hyperosmia.”

Can I be 5 weeks pregnant and have no symptoms?

Yes, many moms-to-be don’t experience symptoms at five weeks. And some of the early pregnancy signs and symptoms may be fleeting or be so subtle that they may be overlooked.

Can I start showing at 5 weeks pregnant?

If you’re a first-time mama, you probably won’t be showing at five weeks. Signs of a belly bump usually “pop” around week 12. If you’ve been pregnant before or are carrying multiples, you may look noticeably pregnant earlier.

3 tips for week 5 for a healthy and safe pregnancy

Being five weeks pregnant is an important time for you and your baby. Here are some tips on how to adjust to this new stage to keep you and your baby safe.

  • Getting enough protein: Protein is essential for your baby’s development, particularly your little one’s brain. Check with your doctor to determine how much protein you should be consuming per day.
  • It's time to make a prenatal appointment: Your doctor can screen you and your baby for any health risks and make sure you’re doing everything you can to nourish the life growing inside you. Check with your doctor about any medications that you’re taking. Some might be OK, but others could be harmful to you or your baby.
  • Morning sickness doesn't stick to a clock: Expect to feel symptoms at any time of day. Check out some helpful morning sickness relief tips to get through these next few weeks.

Week 5 pregnancy checklist

Knowing what to do week-by-week can help you feel prepared and alleviate stress. Add these new items to your to-do list this week. You’ve got this, mama!

Week 5 Pregnancy To-Dos Complete
Make sure to get enough nutrients (folate, iron, calcium, protein, vitamin C & D) Make sure to get enough nutrients (folate, iron, calcium, protein, vitamin C & D) is complete
Discuss an ideal pregnancy weight with your doctor Discuss an ideal pregnancy weight with your doctor is complete
Book a prenatal appointment Book a prenatal appointment is complete


Learn more about your pregnancy, including pregnancy planning and pregnancy nutrition, to feel prepared to continue this magical adventure. You’re armed with the facts and know what to do, so now you can take time to connect with the little one growing inside you.

With week four in the rearview mirror and week five going strong, look to the future and what's coming up in week six!

Join Enfamil Family Beginnings

You’re five weeks pregnant and the excitement is just starting. Prepare for your new arrival with help from Enfamil Family Beginnings. It’s the perfect resource for new and expecting moms. Save on Enfamil products, track your bump and baby’s growth, and get helpful articles each week relevant to your journey. Join now for up to $400 in free gifts.