--- title: 'Pregnancy Symptoms Week by Week' description: 'Pregnancy symptoms week by week — what to expect from the first missed period through week 40, trimester by trimester.' url: 'https://www.trycordia.com/articles/pregnancy-symptoms-week-by-week/' category: 'guides' author: 'Cordia Editorial Team' medically_reviewed: false license: 'CC BY 4.0 — attribute to Cordia (https://www.trycordia.com)' --- _This article is for informational purposes only and is not medical advice. Always consult your healthcare provider with questions about your pregnancy._ # Pregnancy Symptoms Week by Week ## TL;DR - **Weeks 4-6:** Missed period, fatigue, sore breasts, maybe nausea starting - **Weeks 7-12:** Peak nausea, extreme fatigue, frequent urination, mood swings - **Weeks 13-20:** Nausea fades, energy returns, round ligament pain, baby bump appears - **Weeks 21-40:** Movement, heartburn, back pain, Braxton Hicks, swelling, insomnia — and then labor Every pregnancy is different. You might experience all of these, none of these, or a completely different combination. All of that is normal. ## First Trimester (Weeks 1-13) ### Weeks 1-3: Before You Know You probably won't notice anything yet. Conception happens around week 2, and implantation around week 3-4. Some people report light spotting (implantation bleeding) or mild cramping. ### Weeks 4-5: The First Signs - **Missed period** — The most common first clue - **Fatigue** — An overwhelming, can't-keep-your-eyes-open tiredness - **Breast tenderness** — Sore, heavy, or swollen - **Mild cramping** — Similar to period cramps - **Bloating** — Hormones slow digestion - **Mood changes** — You might feel more emotional than usual ### Weeks 6-8: Nausea Arrives - **Morning sickness** — Despite the name, it can happen all day. Peaks around weeks 8-10. - **Food aversions** — Things you loved now make you gag - **Heightened sense of smell** — Everything smells stronger (and worse) - **Frequent urination** — Your uterus is pressing on your bladder - **Increased fatigue** — Still intense ### Weeks 9-11: Peak First Trimester - **Nausea may peak** — This is often the worst stretch, but it means hormones are doing their job - **Acne** — Hormones can trigger breakouts - **Constipation** — Progesterone slows your digestive system - **Visible veins** — Increased blood volume makes veins more prominent ### Weeks 12-13: Turning the Corner - **Nausea starts to fade** for many people - **Energy may begin returning** - **Your waistband gets tight** — Not quite a bump yet, but things don't fit the same - **Reduced urination frequency** — Temporarily, as the uterus rises out of the pelvis ## Second Trimester (Weeks 14-27) ### Weeks 14-16: The Relief - **Energy rebounds** — Many people feel the best they will all pregnancy - **Appetite returns** — After weeks of nausea, food sounds good again - **Less breast tenderness** — Still larger, but less sore - **Nasal congestion** — Pregnancy rhinitis from increased blood flow - **Occasional headaches** ### Weeks 17-20: Movement and Growth - **Quickening** — You might feel baby move for the first time. First-time parents often feel it around weeks 18-22. It feels like flutters, bubbles, or popcorn. - **Round ligament pain** — Sharp pains in your lower belly as things stretch - **Visible baby bump** — Other people might start noticing - **Skin changes** — Linea nigra, darkening nipples, possible melasma - **Increased appetite** — You're growing a baby and a placenta ### Weeks 21-24: The Middle - **Stronger fetal movement** — Kicks you can actually see from outside - **Braxton Hicks contractions** — Mild, irregular tightening of the uterus - **Leg cramps** — Especially at night - **Swelling** — Mild swelling in feet and ankles begins - **Back pain** — Your center of gravity shifts forward - **Heartburn** — May start as the uterus pushes the stomach upward ### Weeks 25-27: Heading Into the Third Trimester - **Difficulty sleeping** — Finding a comfortable position gets harder - **Shortness of breath** — Baby is crowding your diaphragm - **Hemorrhoids** — Increased blood volume and pressure. Common and manageable. - **Itchy skin** — Your belly skin is stretching - **Carpal tunnel symptoms** — Fluid retention can compress wrist nerves ## Third Trimester (Weeks 28-40) ### Weeks 28-31: The Home Stretch Begins - **Braxton Hicks increase** — More frequent practice contractions - **Heartburn intensifies** — Smaller meals help - **Fatigue returns** — Not like the first trimester, but carrying 20+ extra pounds is tiring - **Vivid dreams** — Common and often strange - **Leaky breasts** — Colostrum (early milk) may start leaking ### Weeks 32-35: Getting Bigger - **Pelvic pressure** — Baby is getting heavy - **Shortness of breath** — Your lungs are running out of room - **Frequent urination returns** — Baby is sitting on your bladder again - **Difficulty sleeping** — Between bathroom trips, heartburn, and discomfort - **Lightning crotch** — Sharp, shooting pain in the pelvis from nerve pressure. It's as fun as it sounds. - **Clumsiness** — Your center of gravity is different and your joints are looser ### Weeks 36-38: Almost There - **Baby drops** (lightening) — Breathing gets easier, but pelvic pressure increases - **Nesting instinct** — Sudden energy to clean and organize everything - **Increased vaginal discharge** — Normal as your body prepares for labor - **Losing mucus plug** — Can happen days or weeks before labor - **More intense Braxton Hicks** — Practicing for the real thing ### Weeks 39-40: Due Date Zone - **Everything from above, intensified** - **Loose stools** — Your body may clear things out before labor - **Lower back pain** — Persistent, dull ache - **Restlessness and impatience** — Totally justified - **Possible signs of early labor** — See our [signs of labor guide](guides/signs-of-labor) ## Symptoms That Need Attention Most symptoms are normal discomforts, but contact your provider if you experience: - Heavy vaginal bleeding - Severe abdominal pain - Sudden severe headache - Vision changes (blurring, spots) - Sudden swelling in face or hands - Fever over 100.4F - Decrease in baby's movement - Fluid gushing or leaking from vagina - Contractions before 37 weeks that are regular and increasing ## The Bottom Line Pregnancy symptoms are as varied as the people experiencing them. This guide gives you a general roadmap, but your journey will be uniquely yours. When in doubt about whether something is normal, call your provider — that's what they're there for. ## Sources - ACOG. [How Your Fetus Grows During Pregnancy](https://www.acog.org/womens-health/faqs/how-your-fetus-grows-during-pregnancy) (link verified 2026-09-07) - Cleveland Clinic. [Am I Pregnant? Early Pregnancy Symptoms](https://my.clevelandclinic.org/health/articles/9709-pregnancy-am-i-pregnant) (link verified 2026-09-07) --- _Source: [Pregnancy Symptoms Week by Week](https://www.trycordia.com/articles/pregnancy-symptoms-week-by-week/) — Cordia. Informational only; not medical advice._