Second trimester energy plan
Weeks 14–27 are the honeymoon — energy returns, you actually look pregnant, and the to-do list is long. Here's how to use it well.
Pregnancy · Trimester 2
General guidance. Confirm exercise and travel plans with your provider, especially for higher-risk pregnancies.
TL;DR
Second trimester (weeks 14–27) is the highest-energy stretch of pregnancy. Use it: book the babymoon, finish the registry, take birth classes, do the nursery work, hit your prenatal workouts, eat the real meals. Energy peaks weeks 16–22, starts tapering at 24. Anatomy scan happens around week 20 — plan around it. Don't waste this window.
Want a week-by-week breakdown? Try the pregnancy week-by-week hub.
What changes in your body
- HCG drops from its first-trimester peak. The nausea-causing hormone eases. Most people's nausea fades by week 14, sometimes earlier.
- Progesterone keeps rising but you've adjusted. The crushing fatigue eases significantly.
- Blood volume continues to expand — providing more circulating oxygen, which lifts energy.
- The baby moves from inside the pelvis up into the abdomen — relieving bladder pressure (less peeing).
- Belly becomes visible between weeks 16–22 for most.
You'll feel more like yourself. The price: heartburn, mild back pain, and round ligament pain start showing up in the second half of this trimester.
Week-by-week priorities
Weeks 14–18: get back to baseline
Recover from first trimester. Restart exercise. Reintroduce real foods. Sleep more (still). Catch up on social commitments you put on hold.
Weeks 18–22: the action window
Peak energy. This is when most of the pregnancy to-do list should get done. Anatomy scan happens around week 20.
Weeks 22–27: start nesting + slow down a bit
Energy stays decent but heartburn, back pain, and physical limitations creep in. Belly is now obvious. Begin the more sedentary nesting tasks.
The big to-do list (in priority order)
1. Anatomy scan (week 18–22)
The 20-week ultrasound checks for structural abnormalities. Schedule with your provider. You'll usually find out the baby's biological sex at this scan if you want to.
2. Glucose tolerance test (weeks 24–28)
Screens for gestational diabetes. You'll drink a glucose drink, then wait 1 hour for a blood draw. If results are borderline, you'll do a 3-hour follow-up test.
3. Pick a pediatrician (weeks 20–28)
Tour 2–3 practices. Ask about: hospital affiliation, hours, after-hours line, vaccine schedule, breastfeeding support.
4. Take a birth class (weeks 24–32)
Sign up by week 24 to have spots in your preferred class. See birthing class comparison for choosing the right one.
5. Build the registry (weeks 16–24)
Get this done early so showers have time. Use the registry builder to spec out everything you actually need.
6. Babymoon (weeks 16–24)
If you're traveling, this is the window. Most airlines allow travel through week 36 of single pregnancies, but flying is easiest at weeks 16–24. International trips need provider clearance.
7. Nursery setup (weeks 24–30)
Start gathering pieces. The big decisions (paint, crib, glider) need lead time. The full nursery doesn't need to be done until week 36, but planning happens here.
8. Maternity wardrobe (weeks 14–22)
By week 20, most regular clothes won't fit. Build out: 3–4 maternity pants/leggings, 5–8 maternity tops, 1–2 dresses, 2 bras (one for now, one for later — sizes change), 1 coat if winter.
Most people don't need a full maternity wardrobe. 8–10 pieces covers it. Rent or borrow from friends to fill gaps.
9. Hospital bag (weeks 32–34, but start a list now)
Don't pack yet. Do start a running list of what to put in it. See hospital bag checklist.
Build the registry while energy is high
The registry builder spits out a curated list of what you actually need based on your birth season, home, and feeding plans. Free.
Try the registry builderThe exercise plan
Second trimester is when many people return to or restart exercise. ACOG recommends 150 minutes/week of moderate activity for most pregnant people.
What works at this stage:
- Walking. 30–45 min/day. Easiest, most sustainable.
- Swimming. Zero gravity on joints. Great for the third trimester too.
- Prenatal yoga. Strength, flexibility, mental practice for birth.
- Stationary cycling. Safer than road bike (balance changes).
- Light strength training. Maintain muscle. Most lifts are fine; avoid heavy back squats and prone exercises.
Modifications by trimester:
- Avoid lying flat on your back for more than a few minutes (vena cava compression).
- Avoid hot environments (hot yoga, saunas).
- Skip activities with fall risk as belly grows.
- Hydrate aggressively.
The nutrition shift
You're now eating for one and a half, not for two. Calorie needs rise about 340 calories/day in the second trimester.
Priorities:
- Protein: 75–100g/day. Eggs, lean meat, yogurt, beans, lentils, tofu.
- Iron: 27 mg/day. Spinach, red meat, beans. Your prenatal helps.
- Calcium: 1,000 mg/day. Dairy, fortified plant milks, leafy greens.
- DHA (omega-3): 200–300 mg/day. Fatty fish (low mercury), walnuts, flax, fortified eggs.
- Folate: Keep at 600 mcg/day from supplement + food.
- Hydration: 80–100 oz water/day.
Sleep strategy
Sleep gets variably tricky in the second trimester. Some shifts:
- Stop sleeping on your back. By week 20, the uterus is large enough to compress the vena cava. Side sleeping (left preferred) is the new default.
- Pregnancy pillow. A C-shaped or U-shaped pillow supports belly + between knees. Improves sleep quality significantly.
- Get up to pee less. Mid-trimester bladder pressure eases. Use this window for sleep restoration.
- Heartburn-proof bedtime. Stop eating 2–3 hours before bed.
The mental health window
Second trimester anxiety often eases. But it can shift forms — instead of miscarriage anxiety, you might develop anticipation anxiety about birth or postpartum.
What helps:
- Birth class (knowledge reduces fear).
- Tour the hospital (familiarity helps).
- Therapy if anxiety is escalating, not easing.
- Connection with other pregnant people in your due-date window.
The partner check-in
If you have a partner, second trimester is a good time to align:
- Birth plan basics (preferences, must-avoids, who'll be in the room).
- Maternity/paternity leave plans for both of you.
- Money — registry budget, childcare costs, baseline savings plan.
- Postpartum support (who's helping, when, for how long).
- Mental health — what to watch for in each other.
Tough conversations are easier in second trimester than third. Have them now.
Common second-trimester surprises
- Round ligament pain. Sharp twinges in lower belly or hip when standing up or twisting. Normal — ligaments stretching.
- Heartburn. Starts mild, gets worse. See our heartburn relief guide.
- Skin changes. Linea nigra (dark line down belly), melasma (face), darker areolas. All normal, mostly fade postpartum.
- Vivid dreams. Pregnancy hormones do this. Often weird, sometimes vivid sex dreams (yes, also normal).
- Quickening (feeling baby move). First-time pregnancies feel movement around weeks 18–22. Subsequent pregnancies often earlier.
- Gum sensitivity / bleeding. Pregnancy gingivitis is common. Keep dental hygiene up.
What to NOT do
- Don't pack the hospital bag yet. You'll just end up unpacking it for things you need.
- Don't paint the nursery yourself. The chemicals are mild but most providers recommend not. Let someone else paint.
- Don't start sleep training research at 22 weeks. It'll change your mind 5 times. Save it for the third trimester or postpartum.
- Don't book everything for the third trimester assuming you'll still have energy. Front-load.