You may remember your baby’s birth weight and the number of weeks better than any detail about your own health. Those facts are worth keeping. To understand their meaning for you, a clinician also needs to know why the birth happened early, how growth was assessed and whether you had a pregnancy complication yourself.

In this article

First, separate the words on the record

Several terms can describe the same baby, but they answer different questions. Gestational age means how far along the pregnancy was, usually recorded in weeks and days.

Four terms you may see in pregnancy or newborn records
TermWhat it describes
Preterm or prematureBirth before 37 completed weeks of pregnancy. This describes timing.
Low birth weightA birth weight below 2,500 grams, regardless of the week of delivery. This describes weight alone.
Small for gestational age (SGA)Commonly, a birth weight below the 10th percentile for that gestational age. This compares size with babies born at a similar stage.
Fetal growth restriction (FGR)A concern during pregnancy that growth is restricted. Ultrasound measurements, growth over time and other findings help the team assess it.

A preterm baby can be an appropriate size for the week of birth. A baby born at term can be small. Weight by itself cannot tell you the reason or what happened to your own health.

Sources: 1, 2, 3

A growth diagnosis needs its pregnancy context

SMFM uses an ultrasound estimate of fetal weight or abdominal circumference below the 10th percentile to identify FGR. Clinicians also look at the wider picture, including changes over time and blood flow through the umbilical cord. A percentile is a comparison with a reference population; it does not explain the cause.

Some babies are small without a problem restricting growth. Other growth concerns involve the placenta, a maternal condition or a fetal condition. Ask whether your record says SGA, FGR, or simply low birth weight, and what your obstetric team thought was responsible. You do not need to reinterpret old ultrasound reports on your own.

Sources: 3, 4

Record why delivery happened early

Labor may have started on its own, your waters may have broken early, or the team may have recommended delivery because continuing the pregnancy posed a concern. For a growth-restricted baby, that decision can involve balancing the effects of prematurity against the risks of remaining in the uterus.

The useful detail is the reason documented in your pregnancy record. It might concern your health, the baby, the placenta or several factors together. Record any maternal diagnosis separately, including preeclampsia, another blood pressure disorder or gestational diabetes. When the reason is unclear, write that down too.

Sources: 1, 4

Why does this belong in your heart-health conversation?

The American Heart Association includes preterm delivery and SGA birth among pregnancy outcomes associated with later cardiovascular risk. That means this history can matter even if you were never told you had preeclampsia.

These findings describe patterns in groups. They do not prove that an early delivery caused heart disease, or that every small baby reflects a maternal blood-vessel problem. Your age, family history, blood pressure and other health information still matter.

Bring the pregnancy history to a primary-care visit even if the birth was years ago. Ask how the specific circumstances affect your prevention plan now. The goal is to preserve useful information and act on current findings.

Sources: 5

Read how pregnancy history can inform later heart care

Twin pregnancy needs its own interpretation

Keep the number of babies and whether they shared a placenta in the record. TTTS involves the shared circulation of twins with one placenta. Selective growth restriction concerns one twin’s growth. These details describe important fetal and placental conditions; they do not, by themselves, establish a diagnosis of heart disease in the mother.

Research findings from singleton pregnancies cannot automatically supply a personal risk estimate after twins. A population study comparing twins and singletons found that the relationship between pregnancy hypertension and later maternal cardiovascular disease differed between the groups. That study does not establish what TTTS means for a mother’s later risk.

Bring your own diagnoses alongside the babies’ history so the clinician can interpret both accurately.

Sources: 6, 7

Read the full guide after a complicated twin pregnancy

Bring the details that help someone understand your pregnancy

Your obstetric discharge summary is a useful starting point. Ask the hospital or practice for it if you do not have a copy. Bring any growth or placental findings your team discussed, without feeling you must collect every page.

  • The year and gestational age at delivery, in weeks and days if known.
  • Whether labor started on its own, waters broke early or delivery was recommended, and the recorded reason.
  • The birth weight and any SGA or FGR diagnosis, rather than only the word “small.”
  • Your own pregnancy and postpartum diagnoses, medicines and recommended follow-up.
  • For twins or other multiples, whether the babies shared a placenta and any named complication.

The pregnancy section of Heart Story can help organize what you remember. Mark an uncertain detail as uncertain; your clinician can help decide which missing records would be useful.

Organize my pregnancy and heart history

Agree on a next step for your own health

Ask your clinician to review this history alongside current blood pressure, previous bloodwork and any symptoms. A pregnancy outcome alone cannot decide which heart test or medicine you need. A plan should explain what deserves follow-up, who will arrange it and when you will hear the results.

If your baby is in the NICU, tell the team about practical barriers to your own appointments. If you are living with loss, your pregnancy history and recovery still deserve care. You can share only what you feel ready to discuss and ask for support with difficult parts of the conversation.

Sources: 5

Find care questions and a worksheet for NICU mothers

Make the connection to ongoing care

Your next step

Keep your diagnoses beside the baby’s history

Start with the delivery week, birth weight and any documented SGA or FGR diagnosis. Add whether labor began on its own or delivery was recommended, alongside your blood-pressure or diabetes diagnoses. For twins, include whether they shared a placenta and any named complication. Begin with what you know; records can fill in details later.

Before you leave, confirm the next step, when it should happen, and who will follow up.

Free. No account needed. Use your notes with your care team.

Evidence behind the article

Sources and editorial review

Sources checked:

  1. Preterm BirthCenters for Disease Control and Prevention · 2024 · Source checked October 20, 2026
  2. Low birthweight: definition and measurementUNICEF Data · UNICEF-WHO estimates · Accessed October 20, 2026
  3. Small-for-Gestational-Age Fetus and a Growth Restricted Fetus, Investigation and Care: Green-top Guideline No. 31Royal College of Obstetricians and Gynaecologists · Guideline page updated July 2026
  4. Consult Series #52: Diagnosis and management of fetal growth restrictionSociety for Maternal-Fetal Medicine · 2020 · Reaffirmed 2024
  5. Adverse Pregnancy Outcomes and Cardiovascular Disease Risk: Top Things to KnowAmerican Heart Association · Scientific statement summary · 2021
  6. Consult Series #72: Twin-twin transfusion syndrome and twin anemia-polycythemia sequenceSociety for Maternal-Fetal Medicine · 2024
  7. Maternal cardiovascular disease after twin pregnancies complicated by hypertensive disorders of pregnancy: a population-based cohort studyHiersch and colleagues · CMAJ · 2021

Independent clinical review is identified only when it has been completed and approved in writing. No external reviewer or organization is implied. Sources do not imply endorsement of HEART RESERVE.