Observed arrival · 2026-11-14
Bump Odds puts pregnancy questions into numbers
A collection of 16 pregnancy calculators covering loss risk, dating, fertility, and health, with the site saying it shows its math and sources.
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- People navigating pregnancy, fertility, and early testing
- Worth noticing
- The homepage says its labor estimate uses all 3.5 million US single births in 2024, and compares a folklore gender chart with 2.8 million babies.
Field notes
The homepage sorts its calculators into four groups, from miscarriage risk and hCG doubling time to VBAC and baby-weight percentile. Some tools specify their inputs or limits: the due-date estimate can start from an IVF transfer or scan, and the weight-gain tool cites IOM 2009 ranges, including twins. The site says results are group averages rather than diagnoses and advises contacting a clinician or emergency service when worried.
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