At 14 weeks pregnant, your baby is about the size of a lemon, and you're officially into the second trimester — the stretch a lot of people call the "honeymoon phase" of pregnancy. Facial muscles are starting to work this week, so your baby may squint, frown, or grimace, and the neck is becoming more defined as the head lifts up rather than resting on the chest.

If your dates feel confusing, remember that gestational age counts from the first day of your last period (LMP), not from conception — so "14 weeks pregnant" usually means about 12 weeks since ovulation. For the full timeline, see our pregnancy week-by-week guide, or find out exactly how your due date is calculated. If you're picking up from last week, catch up on 13 weeks pregnant first.

Diagram comparing a lemon to a 14 week fetus, showing a more defined neck and active facial muscles — At 14 weeks, your baby is about the size of a lemon, with a more defined neck and facial muscles starting to work.

Key takeaways

Baby is about the size of a lemon (roughly 14.7 cm, head to heel) and weighs around 93 grams.
Facial muscles are starting to work — your baby may squint, frown, or grimace.
This week marks the start of the second trimester by most conventions, along with a shift in how size is measured.

What "14 Weeks Pregnant" Actually Means

Using standard gestational dating, week 14 starts about 12 weeks after ovulation, and marks the beginning of the second trimester by most conventions, including our own pregnancy week-by-week guide. In fetal-age terms (counting from conception rather than your last period), this is closer to "12 weeks post-conception."

This week also marks a quieter but useful shift: size is typically measured crown-to-rump through the end of the first trimester, then head-to-heel from around now on, since the legs are straightening out and becoming a meaningful share of total length. It's why size figures can look like they jump between one week's guide and the next — it's usually the measurement method changing, not a growth spurt.

Baby Size at 14 Weeks

At 14 weeks, your baby is about the size of a lemon — roughly 14.7 centimeters long, measured head to heel, and weighing around 93 grams. (Source: Cleveland Clinic)

Facial Muscles Start Working

Week 14 brings the first real facial expressions, even though there's no one around to see them yet. Facial muscles are developed enough now that your baby may squint, frown, or grimace — early rehearsals that will eventually turn into real expressions after birth.

The neck is also becoming more defined this week, allowing the head to lift up rather than resting directly on the chest as it did earlier on. Fine hair follicles are forming across the skin, laying the groundwork for lanugo — the soft, downy hair that will become visible over the next several weeks. Limb movements are also becoming more coordinated as muscle control continues to improve.

Why this matters for prenatal care. With facial muscle control, neck definition, and early hair follicle formation all underway, continuing to avoid alcohol, unapproved medications, and other flagged exposures remains important through the second trimester. (General guidance — confirm specifics with your provider: ACOG)

What You Might Notice at 14 Weeks Pregnant

For many people, week 14 continues the relief that started last week, with early second-trimester energy settling in. Here's what commonly shows up:

Energy that keeps improving. Many people notice a real, sustained uptick in energy as they settle into the second trimester.

Appetite picking back up. As nausea fades for many, hunger often returns — sometimes more intensely than before pregnancy.

A more noticeable bump for some. The uterus continues rising, and clothes may start fitting differently even before a true "bump" appears.

Round ligament twinges. Occasional light pulling or twinging sensations low in the abdomen remain common as the uterus keeps expanding.

Breast changes continuing. Breasts may keep growing and feeling full as they continue preparing for eventual milk production.

Mild back discomfort. As posture shifts to accommodate a growing uterus, some people start noticing occasional lower back twinges.

Skin changes. Some people notice increased oiliness, breakouts, or a subtle "glow" some attribute to increased blood flow and hormonal shifts.

It's also completely normal to have few or no symptoms yet. Symptom timing and intensity vary widely from person to person and even between pregnancies for the same person.

What's Happening in Your Body

The second trimester officially begins, and many people notice a real shift in energy and appetite.
Facial muscles start working. As covered above, your baby may squint, frown, or grimace.
The neck becomes more defined, allowing the head to lift off the chest.
Hair follicles begin forming, laying the groundwork for lanugo in the coming weeks.
The uterus continues rising, becoming more noticeable in the lower abdomen for many people.

Tips for Week 14

Keep taking your prenatal vitamin with folic acid. Muscle and hair follicle development continue, so consistency still matters.

Eat to your appetite. If hunger is picking up, this is a normal and healthy response as your energy needs increase.

Consider gentle exercise if you feel up to it. Many people find the second trimester an easier window to stay active, though always check with your provider first.

Stay hydrated. This remains a helpful habit throughout pregnancy, not just during nausea.

Avoid alcohol, tobacco, and unapproved medications. These guidelines continue through the second trimester.

Start thinking about second-trimester screenings. If you haven't already discussed options like the anatomy scan with your provider, this is a good week to ask what's coming up.

Tips for Partners

Celebrate settling into the second trimester together — many people describe this as the most comfortable stretch of pregnancy.
Support appetite changes without judgment — increased hunger is a normal, healthy response right now.
Ask about upcoming screenings together, like the anatomy scan, so you're both informed ahead of time.
Keep an eye out for mild back discomfort and offer support, like helping with posture-friendly seating or light stretching.

FAQ

How big is my baby at 14 weeks pregnant? About the size of a lemon — roughly 14.7 centimeters long, measured head to heel, and weighing around 93 grams.

Is 14 weeks the start of the second trimester? Yes, by most conventions, including our own week-by-week guide, the second trimester begins at week 14.

What is developing in my baby at 14 weeks? Facial muscles start working, so your baby may squint, frown, or grimace. The neck becomes more defined, and hair follicles begin forming.

Why does baby size measurement change around now? Size is typically measured crown-to-rump through the end of the first trimester, then head-to-heel afterward, since the legs are straightening out and becoming a meaningful share of total length.

What symptoms are normal at 14 weeks pregnant? Improving energy, increased appetite, round ligament twinges, breast changes, mild back discomfort, and skin changes are all common at this stage.

When will I feel my baby move? Most first-time parents notice the first flutters, called quickening, somewhere between weeks 18 and 20, though it can happen earlier or later.

When is my next prenatal appointment likely to be? Many providers continue with appointments roughly every four weeks through the second trimester, though your provider will confirm your specific schedule.

Pregnancy Checklist at Week 14

Keep taking a prenatal vitamin with folic acid daily
Eat to your appetite as hunger returns
Ask your provider about gentle exercise options
Stay hydrated throughout the day
Avoid alcohol, tobacco, and check any medications with your provider
Ask your provider about upcoming second-trimester screenings, like the anatomy scan
Note any severe cramping or heavy bleeding and call your provider if it occurs

Related guides

13 Weeks Pregnant: Symptoms, Baby Size & What to Expect — what happened the week before, as fingerprint ridges began forming
Pregnancy Week by Week: A Complete Guide — see what happens in every week and trimester, from implantation to full term
How Is Your Due Date Actually Calculated? — the exact formula behind your due date, plus a free calculator

Week 14 kicks off the second trimester with your baby's first facial expressions — squints, frowns, and grimaces — while many people finally start to feel like themselves again.