Screening · The latest
STD Testing in Early Pregnancy: What's Screened
Early pregnancy STD testing is a standard part of your first prenatal visit.
Read the guidePregnancy health
Your whole pregnancy, clearly explained.
Obgyn-reviewed guides to every condition, the prenatal tests that matter, and the tools to track it all — from the first weeks to the days after birth.
Pregnancy Conditions
Conditions people look up most
A curated start, grouped by clinical family and filterable by urgency. See every condition we cover in the full list below.
- Call provider
Preeclampsia
Preeclampsia is a serious blood pressure disorder of the second half of pregnancy, and more than high numbers on a cuff.
How common: 5% to 8% of pregnancies
- Routine
Gestational diabetes
Gestational diabetes rarely makes you feel any different, which is why nearly everyone is screened for it between 24 and 28 weeks.
How common: About 8% of pregnancies
- Emergency
Ectopic pregnancy
An ectopic pregnancy has implanted outside the uterus, almost always inside a fallopian tube, which is a space that cannot stretch to hold it.
How common: About 1 in 50 pregnancies
- Call provider
Miscarriage
If you are reading this in the middle of it, start here: a miscarriage is almost never caused by anything you did.
How common: 10% to 20% of known pregnancies
- Emergency
Blood Clots in Pregnancy
A blood clot in a deep vein, usually in the leg, is one of pregnancy's quieter dangers.
How common: About 1 to 2 in 1,000 pregnancies
- Emergency
Preterm labor
Preterm labor begins too early, when regular contractions start to open the cervix before 37 weeks.
How common: About 1 in 10 US births
Screening & testing
The tests that matter in pregnancy
The prenatal screens people search for, plus confidential STI-in-pregnancy testing — with same-day options near you.
Track it
Pregnancy tools & calculators
Free, private, ACOG-grounded — every one runs in your browser, nothing is saved or shared.
- Calculator Due date calculator Your estimated due date, how far along you are, and your trimester — from your last period, conception, IVF transfer, or a dating scan. Open tool
- Calculator Ovulation calculator Your fertile window, ovulation day, and the earliest reliable test date, from your cycle. Open tool
- Guide + reader How to read a pregnancy test Faint line, evaporation line, or a result you don't trust? An interactive reader tells you what your exact result means. Open tool
Read next
Guides & explainers
Deeper, plain-language reads that pair with the condition library.
Explore the vertical
Explore pregnancy health
- Conditions48 Every complication and condition, symptoms to treatment, triaged by urgency.
- Testing & screening Prenatal screens and STI-in-pregnancy testing — what each test checks for and when it happens.
- Early Pregnancy Guides Plain-language explainers on testing timing, symptoms, and what a positive or negative result means.
- Tools & calculators Due-date and ovulation calculators, and a pregnancy-test reader — private, in-browser.
- FAQs Straight answers to the questions people actually ask in pregnancy.
By the numbers
Pregnancy health in the US
- US babies are born preterm, before 37 weeks
- 1 in 10
- of pregnancies develop preeclampsia
- 5–8%
- experience pelvic girdle pain
- 1 in 5
- pregnancy-related deaths are from a lung clot — nearly all preventable
- 1 in 10
Sources: CDC, ACOG, RCOG, StatPearls. US estimates; figures vary by population.
Good to Know
Common questions about pregnancy health
From when to call your provider to whether STI testing is routine — the questions people actually ask.
When should I call my provider versus wait?
Every condition guide flags its own triage level. As a rule: heavy bleeding, a seizure, severe headache with vision changes, or trouble breathing are 911. New swelling, reduced fetal movement, a fever, or one-sided leg pain are same-day calls. When unsure, call — providers would rather hear from you.
Is STI testing really routine in pregnancy?
Yes. A standard panel at the first prenatal visit is recommended for everyone, and some tests are repeated later. It is confidential and protects both you and the baby.
Are these guides a substitute for prenatal care?
No. They are obgyn-reviewed education to help you understand what is happening and what to ask — not a diagnosis. Anything urgent goes to your provider or labor & delivery.
How do I find testing near me?
Use the STI-testing-in-pregnancy guide's finder — it lists free and low-cost clinics, labs, and same-day options filtered to your city.
Have a different question? Browse the full pregnancy FAQ library, every question we answer, in one place.
Editorial standards and sources
Medically Reviewed · Updated
Reviewed by Dr. Grace Lin, MD, FACOG · OB-GYN
Obstetrician-gynecologist focused on reproductive and sexual health for women: pregnancy, BV, yeast, trichomoniasis and HPV/cervical screening. Our editorial guidelines →
5 Sources
Data & references
- ACOG: Pregnancy resources and practice guidancehttps://www.acog.org/womens-health/pregnancy
- CDC: Pregnancy complicationshttps://www.cdc.gov/maternal-infant-health/pregnancy-complications/
- StatPearls (NCBI Bookshelf)https://www.ncbi.nlm.nih.gov/books/NBK430685/
- MedlinePlus (NIH): Health problems in pregnancyhttps://medlineplus.gov/healthproblemsinpregnancy.html
- March of Dimes: Complications & losshttps://www.marchofdimes.org/find-support/topics/pregnancy
This page is educational information, not medical advice or a diagnosis. If you have symptoms or a concern in pregnancy, contact your obstetric provider or, for anything urgent, go to labor and delivery or call 911.