⚕️ This tool is for educational purposes only and does not replace medical advice. Always consult your OB-GYN or healthcare provider.
A pregnant woman enjoying a calm moment outdoors
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Based on ACOG Clinical Guidelines

Know your numbers, own your pregnancy health

Monitor your key pregnancy health indicators at home — and understand what they mean — so you can show up to every OB-GYN appointment informed and empowered.

How far along are you?

Your gestational week helps us show the relevant healthy ranges for each indicator.

Week 20
2nd Trimester
Week 20Gestational age
2nd TrimesterCurrent trimester
~20 weeks leftUntil estimated due date
Developing sensesBaby milestone

One or more of your readings is outside the normal range

Based on ACOG guidelines, the values you entered suggest you should contact your OB-GYN or healthcare provider. Do not wait for your next scheduled appointment — call your provider today. If you are experiencing severe symptoms (severe headache, vision changes, chest pain, difficulty breathing, or sudden severe swelling), seek emergency care immediately.

Your Pregnancy Health Indicators

Enter your readings below. All ranges are based on ACOG clinical guidelines.

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Blood Pressure
Systolic / Diastolic — measured in mmHg. Normal: below 140/90 at any gestational age.
/ mmHg
ACOG Normal Range Systolic < 140 mmHg and Diastolic < 90 mmHg. Persistent readings of ≥ 140/90 after 20 weeks may indicate gestational hypertension. Readings ≥ 160/110 are considered severe.
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Fundal Height
Distance from pubic bone to top of uterus in cm. Measured from ~20 weeks onward.
centimeters (cm)
ACOG Normal Range Fundal height in cm should roughly equal gestational age in weeks (± 3 cm). A discrepancy > 3 cm warrants an ultrasound to assess fetal growth. Measured from 20 weeks onward.
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Fetal Movement / Kick Counts
Count distinct movements. At least 10 movements in 2 hours is reassuring (from 28 weeks).
movements in 2 hrs
ACOG Guidance (≥ 28 weeks) Perceiving 10 distinct movements within 2 continuous or interrupted hours is considered reassuring. A non-reassuring count should prompt contact with your provider for further assessment.
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Gestational Weight Gain
Total weight gained since pre-pregnancy. Healthy range depends on your pre-pregnancy BMI.
lbs gained total
IOM / ACOG Recommended Total Gain Underweight: 28–40 lbs · Normal: 25–35 lbs · Overweight: 15–25 lbs · Obese: 11–20 lbs. These are total pregnancy targets; rate of gain varies by trimester.
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Urine Protein (Proteinuria)
Typically measured at prenatal visits via dipstick. Report your dipstick result below.
ACOG Reference Normal: < 300 mg/24 hrs. Significant proteinuria (≥ 300 mg/day or ≥ 3+ on dipstick) after 20 weeks, combined with high blood pressure, may indicate preeclampsia. Dipstick has high false-positive rates; 24-hr urine is the gold standard.
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Cervical Length
Measured via transvaginal ultrasound, usually between 18–24 weeks. Enter only if your provider shared this value.
mm
ACOG Reference Normal cervical length at 18–24 weeks is typically ≥ 25 mm. A length < 25 mm is associated with increased risk of preterm birth. < 10 mm warrants urgent evaluation.
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Glucose Challenge (GCT) Result
1-hour 50g glucose challenge, done between 24–28 weeks. Enter blood glucose result from your lab.
mg/dL (1-hr result)
ACOG Threshold A 1-hour GCT result ≥ 130–140 mg/dL (providers use varying thresholds) triggers a follow-up 3-hour 100g OGTT. A 3-hr OGTT with 2+ abnormal values confirms gestational diabetes.
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Fetal Heart Rate (Doppler)
As heard at your prenatal visit with a Doppler device. Normal: 110–160 bpm throughout pregnancy.
beats per minute (bpm)
Normal Range 110–160 bpm. Rate naturally decreases slightly as pregnancy progresses. A rate < 110 (bradycardia) or > 160 (tachycardia) warrants evaluation.
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Swelling (Edema)
Mild swelling of feet/ankles is common. Note whether you have sudden or severe swelling.
ACOG Guidance Mild pedal edema (feet/ankles) is a normal pregnancy finding. Sudden severe swelling of the face, hands, or severe pitting edema, especially with high blood pressure, may indicate preeclampsia.

Understanding Your Pregnancy Health

Evidence-based education organized by trimester, based on ACOG clinical guidelines.

All Trimesters

What is a "normal" blood pressure in pregnancy?

ACOG defines hypertension in pregnancy as a systolic BP ≥ 140 mmHg or diastolic ≥ 90 mmHg on two readings at least 4 hours apart. Below this threshold is considered normal. Blood pressure naturally dips in the second trimester, then rises again as you approach your due date.

2nd Trimester

Fundal height: the tape measure test

Starting around week 20, your provider will measure the distance from your pubic bone to the top of your uterus. This number in centimeters should roughly match your week of pregnancy. A difference of more than 3 cm may prompt an ultrasound to check on baby's growth and amniotic fluid levels.

2nd Trimester

Glucose screening: catching gestational diabetes early

Between 24–28 weeks, ACOG recommends a 50g glucose challenge test (GCT). You drink a glucose solution and have blood drawn one hour later. If your result is ≥ 130–140 mg/dL, you'll have a longer diagnostic test. Gestational diabetes, if present, is manageable with diet, exercise, and sometimes medication.

3rd Trimester

Kick counts: tuning into baby's movements

From 28 weeks onward, ACOG advises awareness of fetal movement. The "count-to-10" method means noticing 10 distinct movements within 2 hours. Do this when your baby is usually active (often after meals). A decrease in movement — not just one off day, but a persistent change — warrants a call to your provider.

3rd Trimester

GBS screening at 36–37 weeks

Group B Streptococcus (GBS) is a normal bacteria found in many women. ACOG recommends all pregnant women be screened for GBS between 36 0/7 and 37 6/7 weeks. If positive, you'll receive IV antibiotics during labor — not before — to protect your newborn. A positive result does not mean you have an infection.

All Trimesters

Understanding preeclampsia warning signs

Preeclampsia affects 5–8% of pregnancies and usually develops after 20 weeks. Key warning signs include: persistent headache, visual changes (blurry vision or seeing spots), pain in your upper right abdomen, sudden severe swelling, and blood pressure ≥ 140/90. These symptoms together, especially with high BP, require immediate evaluation.

1st Trimester

Why cervical length matters

A short cervix (less than 25 mm measured by ultrasound between 18–24 weeks) is one of the strongest predictors of preterm birth. If you have a history of preterm birth or your provider notices a short cervix at your anatomy scan, they may recommend progesterone supplementation or a cervical cerclage (stitch). Not everyone needs this measurement routinely.

All Trimesters

Healthy weight gain in pregnancy

The Institute of Medicine guidelines, endorsed by ACOG, recommend total weight gain based on your pre-pregnancy BMI. Weight gain is not linear — most weight is gained in the 2nd and 3rd trimesters. Both too little and too much gain carry risks for baby and mother, so discuss your personal target with your OB-GYN.

When to Call Your OB-GYN

🚨 Go to ER immediately
  • Severe headache unrelieved by Tylenol
  • Vision changes (blurry, seeing spots)
  • Chest pain or difficulty breathing
  • Sudden, severe swelling of face/hands
  • Vaginal bleeding (heavy)
  • Decreased or absent fetal movement
  • Signs of labor before 37 weeks
📞 Call your provider today
  • Blood pressure ≥ 140/90 on 2 readings
  • Fundal height discrepancy > 3 cm
  • Fewer than 10 kicks in 2 hours
  • Moderate or worsening swelling
  • Glucose screening result ≥ 140 mg/dL
  • Burning/pain with urination
  • Any new or persistent concerning symptom
📅 Mention at next visit
  • Mild ankle/feet swelling at end of day
  • Mild heartburn or nausea
  • Round ligament pain
  • Minor changes in vaginal discharge
  • Questions about weight gain
  • Fatigue or back pain

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