- Gestational diabetes mellitus (GDM) is high blood glucose first recognised during pregnancy.
- Do not wait for thirst or frequent urination before screening—GDM is commonly silent.
- Very high glucose with vomiting, marked drowsiness, breathing difficulty or severe dehydration needs urgent medical assessment.
Why this deserves attention
Gestational diabetes mellitus (GDM) is high blood glucose first recognised during pregnancy. It often causes no obvious symptoms, which is why screening is important. In Singapore, HealthHub advises screening expectant mothers who do not already have known diabetes, with the usual OGTT window around 24–28 weeks and earlier assessment for some higher-risk pregnancies.
The aim is not to self-diagnose from one symptom. Onset, progression, impact on basic function and the person’s age, pregnancy status and existing conditions all affect how quickly medical review is needed.
Patterns and practical observations
- Do not wait for thirst or frequent urination before screening—GDM is commonly silent.
- Bring previous glucose/HbA1c results and tell the team about prior GDM, pre-diabetes, PCOS, family history and previous pregnancy outcomes.
- If diagnosed, glucose targets and monitoring frequency are individual; use the maternity/diabetes team’s plan rather than targets copied from another person.
- A history of GDM increases future type 2 diabetes risk, so postpartum testing and longer-term screening remain important.
A short timeline is often more useful than a vague description: note when symptoms began, how fast they changed, triggers, associated symptoms and any objective readings you already have. Do not delay care just to wait for a more “textbook” pattern.
Medical assessment and next steps
- Follow the OGTT preparation instructions exactly; changing diet immediately before the test to “improve” the number can make results less useful.
- Management commonly includes nutrition, safe physical activity, glucose monitoring and medication if needed.
- After delivery, complete the postpartum glucose follow-up recommended by your team; HealthHub notes repeat diabetes screening remains important over time.
Tests and treatment are individual. An online guide cannot replace examination, laboratory testing, imaging or specialist judgement; if you already have prescribed treatment, discuss changes with the treating team rather than adjusting it independently.
Where TCM may fit
TCM should not replace glucose monitoring, nutrition counselling, insulin or other prescribed treatment. Herbs marketed for “lowering sugar” can be unsafe in pregnancy or interact with treatment; do not add them without the maternity/diabetes team knowing.
Tell both the TCM practitioner and medical team about every herb, supplement, prescription and over-the-counter medicine. “Natural” does not mean interaction-free, particularly in pregnancy, breastfeeding, liver/kidney disease, anticoagulation or polypharmacy.
When not to wait
- Very high glucose with vomiting, marked drowsiness, breathing difficulty or severe dehydration needs urgent medical assessment.
- In pregnancy, reduced foetal movement, severe headache/visual symptoms, bleeding or severe abdominal pain requires obstetric assessment regardless of glucose.
In Singapore, call 995 for a life-threatening emergency. If symptoms are serious and you are unsure, prioritise appropriate conventional medical assessment rather than waiting for a complementary-care appointment.
Related reading
Singapore references
This page was checked in September 2026 against current Singapore public-health / healthcare information. These links are for further reading; individual screening intervals, diagnostic thresholds and treatment should still be decided by your own medical team.
This page provides general health education, not an individual diagnosis or emergency plan. Sudden, severe, persistent or rapidly worsening symptoms—especially the red flags above—require appropriate conventional medical assessment.