WEEK 8Trimester 1•Baby: Raspberry
Organogenesis & Rapid Brain Neurogenesis
Estimated Length1.6 cm
Estimated Weight1 g
Fetal Morphogenesis & Anatomy Highlights
- •All essential external and internal structures have been laid down; embryonic period concluding soon.
- •Fetal heart rate accelerates to 150–170 bpm.
- •Webbed fingers and toes separate as apoptosis breaks down interdigital tissue.
- •Physiological midgut herniation into the umbilical cord accommodates rapid intestinal elongation.
Same-Day Assessment / Urgent Care
Week 8 Urgent Red Flags
Immediate clinical evaluation or presentation to Winnipeg Obstetric Triage (HSC / St. Boniface) is indicated if:
- •Intractable vomiting with weight loss > 5% of pre-pregnancy weight
- •Vaginal bleeding exceeding menstrual flow or passing clots
- •Dysuria, urinary frequency with fever or flank pain
Women's Hospital HSC Triage: 204-787-8600 | St. Boniface: 204-237-2263
Clinician Perspective • Physiological & Screening Protocols
Maternal Physiological Adaptations
Systemic vascular resistance begins to fall due to circulating nitric oxide. Uterus has enlarged to the size of a lemon.
Expected Clinical Symptoms
Peak nausea and food aversionsHeightened emotional labilityMild lightheadedness due to systemic vascular resistance drop
Clinical Investigations & Screening Schedule
- ✓First-trimester prenatal panel review: Rh factor, antibodies, rubella immunity, STI screen.
- ✓Screening for asymptomatic bacteriuria (urine culture) - treatment prevents pyelonephritis.
Upcoming Visit Horizon: Book First Trimester Screening / NIPT and dating ultrasound.