Increased Breast Size

Early pregnancy symptom

The swelling of the breasts in early pregnancy is due to the increase of hormones which cause increased blood flow to the breasts to begin the preparation for breastfeeding. The breasts may increase by a full cup size in just the first 12 weeks of pregnancy.

 

 

Comparison of how often this symptom is experienced by pregnant vs non-pregnant women.

 


After implantation (9 dpo+)
experiencing this symptom
increases
the probability of pregnancy

 


Overall (during the luteal phase)
experiencing this symptom
does not impact
the probability of pregnancy

 

 

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Summary of chart

An explanation of the affect on the probability of pregnancy for each day past ovulation or group of days.

0 dpo - 12 dpo

Does not significantly affect probability of pregnancy

13 dpo - 14 dpo

Slightly increases probability of pregnancy

15 dpo - 18 dpo

Increases probability of pregnancy

 

Detailed breakdown by DPO

Shows data for days where differences are meaningful.

Day past ovulationPregnant vs non-pregnant
14 dpo 1.3 times more (+22%)
15 dpo 1.4 times more (+31%)
16 dpo 1.4 times more (+40%)
17 dpo 1.5 times more (+48%)
18 dpo 1.6 times more (+51%)
Understanding the data

Pregnant women experience this symptom the number of times listed as often as non-pregnant. The percentage listed refers to the percentage increase or decrease between pregnant and non-pregnant.

Visit the dpo chart pages to view most common and significant positive and negative indicators of pregnancy for each day past ovulation.

 

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Comments

What women are saying about this symptom.

SNROMERO15  1 year ago
8 DPO yes, breast size has increase and painful

mamax4  1 year ago
6dpo both breasts look/feel bigger, but left side is noticeably bigger.

Dublin  1 year ago
Breast feeling and looking full

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