bumpcalculator.com

Guides

Clear, calm, evidence-informed answers for every step — from trying to conceive to your baby’s first year. Each guide pairs with a free calculator so you can run your own numbers.

Trying to Conceive

Ovulation, cycles and timing conception.

Early Pregnancy

Implantation, testing and the two-week wait.

Your Pregnancy

Due dates, weeks and healthy weight gain.

Foods to Avoid During Pregnancy: A Practical Guide

A calm, practical look at the foods to avoid during pregnancy — high-mercury fish, undercooked meats, certain cheeses, caffeine and alcohol — plus the many foods that stay safe.

7 min read Read guide →

How Far Along Am I? Understanding Pregnancy Weeks and Trimesters

Pregnancy is counted in weeks from your last period — so you're 'pregnant' before you conceive. Here's how to count weeks and days, what each trimester holds, and how a scan can shift your dates.

7 min read Read guide →

How Is Your Due Date Calculated?

Your due date is an estimate, not a deadline. Here's how Naegele's rule, cycle length, ultrasound and IVF dating each arrive at that single day — and why so few babies actually land on it.

7 min read Read guide →

Pregnancy Weight Gain Week by Week: What's Normal

How much weight gain is healthy in pregnancy depends on your starting BMI. Here are the IOM ranges, where the weight actually goes, and why your provider's guidance always comes first.

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Kick Counts: How to Count Baby Kicks and When to Call

How to do kick counts: when to start, the count-to-10 method, what a normal movement pattern looks like, the myth about babies slowing down before labor, and when to call your provider.

6 min read Read guide →

How Many Weeks Is 3, 6 or 9 Months Pregnant? Months-to-Weeks Chart

Six months pregnant is roughly 23–27 weeks, and nine months is 36–40 weeks — but the answer depends on how months are counted. Here's the full months-to-weeks chart, why the numbers overlap, and how to convert your own dates.

6 min read Read guide →

Labor & Delivery

Contractions and knowing when it is time.

Gender & Fun

Predicting boy or girl, and old wives’ tales.