From Essential obstetric and newborn care › Chapter 1: Diagnosing and monitoring pregnancy · Médecins Sans Frontières, Current online edition, 2026
MSF guidance on clinical signs, symptoms and investigations for diagnosing pregnancy in resource-limited settings.
- Issuer
- Médecins Sans Frontières
- Edition
- Current online edition, 2026
- Audience
- Clinicians providing obstetric care in resource-limited settings
- Evidence
- Expert consensus
- Reviewed
- 23 Oct 2026 · GMJ
What this guideline says
GMJ summary
This section from MSF’s Essential Obstetric and Newborn Care guideline outlines the clinical approach to diagnosing pregnancy in humanitarian and resource-limited settings. The guidance emphasizes amenorrhoea combined with progressive uterine enlargement starting 7 to 8 weeks after the last menstrual period as the primary diagnostic signs, while cautioning clinicians to rule out other causes of amenorrhoea including physiological (breastfeeding), drug-related (contraceptives up to 3 months after stopping, antipsychotics, corticosteroids), endocrine, psychological and nutritional causes.
The document details the evolution of pregnancy signs across trimesters: first-trimester breast changes (increased size, tenderness, vascularisation and swollen areolas), urinary frequency and transitory nausea/vomiting; second-trimester foetal movement, uterine contractions and audible foetal heart tones. The guidance takes a pragmatic approach to investigations, noting that pregnancy tests are not routinely necessary but are indicated for suspected ectopic pregnancy or when early diagnosis is required for pregnancy termination. Similarly, ultrasound is not considered routinely necessary for diagnosis.
Key points
For clinicians — doses and thresholds as stated in the guideline
- Amenorrhoea combined with progressive uterine enlargement starting 7 to 8 weeks after last menstrual period is the primary sign of pregnancy
- Rule out other causes of amenorrhoea: breastfeeding, contraceptives (effects up to 3 months after stopping), antipsychotics, corticosteroids, thyroid disorders, psychological and nutritional causes
- First-trimester signs include breast changes (increased size, tenderness, vascularisation, swollen areolas), urinary frequency and transitory nausea/vomiting
- Second-trimester signs include maternal perception of foetal movement, uterine contractions and audible foetal heart tones
- Pregnancy tests are not routinely necessary but are indicated for suspected ectopic pregnancy or early diagnosis when termination is planned
- Ultrasound is not routinely necessary for pregnancy diagnosis
From the guideline
Verbatim
“The first sign of pregnancy is amenorrhoea combined with a progressive increase in the size of the uterus starting 7 to 8 weeks after the last menstrual period.”
Editor’s perspective
Why this matters for Georgia and the region
Prof. Giorgi Pkhakadze, MD, MPH, PhD
Editor-in-Chief, Georgian Medical Journal · Chair, Public Health Institute of Georgia · WHO consultant, health and migration
As Editor-in-Chief of the Georgian Medical Journal and Chair of the Public Health Institute, I see this MSF guidance as a valuable reminder that clinical examination remains the cornerstone of pregnancy diagnosis, particularly relevant as Georgia continues strengthening maternal health services in mountainous and rural regions where equipment may be limited. The specific timeframe—uterine enlargement starting 7 to 8 weeks after last menstrual period—provides Georgian clinicians with a clear clinical benchmark, while the emphasis on ruling out drug-related amenorrhoea (including contraceptives up to 3 months after stopping) is essential given increasing contraceptive uptake under Georgia's family planning programmes. The key implementation consideration for our context is balancing this clinical approach with the reality that Georgian women increasingly expect ultrasound confirmation, requiring clear communication about when technology adds diagnostic value versus when clinical assessment suffices.
ORCID 0000-0001-7609-4515 · Perspective written for the GMJ Guidelines Library, 23 Oct 2026
Applicability
Georgia and the South Caucasus
This guidance is directly applicable to Georgia’s primary care and maternal health settings, particularly in rural areas and regions with limited access to advanced diagnostic equipment. Georgian clinicians should adapt this clinical diagnosis approach within the national antenatal care programme, recognizing that while ultrasound is widely available in urban centres, peripheral facilities may rely more heavily on clinical signs. The emphasis on ruling out drug-related amenorrhoea is particularly relevant given contraceptive use patterns and the need to differentiate physiological causes in the context of Georgia’s breastfeeding practices and nutritional transitions.
Questions this guideline answers
Quick answers
When should a pregnancy test be performed?
Pregnancy tests are not routinely necessary for diagnosis. They are specifically indicated when ectopic pregnancy is suspected or when early diagnosis is required for a pregnancy intended for termination.
Is ultrasound required to diagnose pregnancy?
No, ultrasound is not routinely necessary for pregnancy diagnosis. Clinical signs—amenorrhoea with progressive uterine enlargement starting 7 to 8 weeks after the last menstrual period—are sufficient.
What other causes of amenorrhoea should be ruled out?
Rule out physiological causes (breastfeeding), drug-related causes (contraceptives up to 3 months after stopping, antipsychotics, corticosteroids), endocrine disorders (thyroid), psychological factors and nutritional causes before confirming pregnancy.
When does the uterus begin to enlarge in pregnancy?
Progressive increase in uterine size begins 7 to 8 weeks after the last menstrual period, which is one of the primary clinical signs for diagnosing pregnancy.
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- Issuer
- Médecins Sans Frontières
- Guideline
- Essential obstetric and newborn care
- Chapter
- Chapter 1: Diagnosing and monitoring pregnancy
- Type
- Clinical guideline (chapter)
- Edition
- Current online edition, 2026
- Status
- Current
- Published
- 2026-10-14
- Scope
- Section 1.1 only
- Audience
- Clinicians providing obstetric care in resource-limited settings
- Evidence
- Expert consensus
- Record history
- Created 23 Oct 2026 · updated 23 Oct 2026 · next check Apr 2027
Médecins Sans Frontières. 1.1 Diagnosing pregnancy. In: Essential obstetric and newborn care [Internet]. MSF; 2026 [cited 2026 Oct 14]. Available from: https://medicalguidelines.msf.org/en/viewport/ONC/english/GMJ Guidelines Library records are original summaries written by the GMJ editorial team from the issuer’s published document and reviewed by a physician. They do not replace the full guideline. The document is the copyright of its issuer and is linked, not hosted. Spotted an error or a newer edition? Tell the Guidelines Desk.
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