Louise 
Making Sense of Risk in Pregnancy: What Do the Numbers Really Mean?
If you’ve ever heard someone say, “That doubles your risk,” and felt your stomach drop — you’re not alone. In pregnancy, words like risk, chance, and likelihood come up all the time. Trying to make sense of pregnancy risk can be daunting, especially when you’re already carrying a small human and more than enough to think about.
But here’s the thing: not all risks are explained clearly, and understanding the difference between absolute and relative risk can really change how you feel about the decisions ahead.
So let’s take a breath, strip away the jargon, and talk through it together — because once you get the hang of it, it’s much easier to feel in control. Pregnancy is full of questions about what’s safe for you and your baby. Join my Antenatal Classes to gain clear, evidence-based guidance and feel prepared for the months ahead.
What do people actually mean by “risk”?
In medical terms, risk is just a way of describing how likely something is to happen. That’s it. It’s a number, not a prediction. Making sense of risk in pregnancy requires understanding that something might be more likely with one choice than another — but that doesn’t mean it will happen.
And often, the way those numbers are presented makes a big difference to how they sound.
Absolute risk vs relative risk (and why it matters)
Absolute risk
This is the actual chance of something happening. You’ll often see it written as “1 in 1,000” or “a 0.1% chance.” Understanding absolute risk is a part of making sense of risk during pregnancy because it gives you the full picture — not just whether something increases your risk, but by how much.
Relative risk
This compares two things. So someone might say “That doubles the risk” — but if the original risk was very low to begin with, doubling it might still leave you with a small number.
Here’s a quick example:
Let’s say the risk of something happening is:
- 1 in 10,000 without an intervention
- 2 in 10,000 with it
That’s a very small change in absolute terms — just 1 extra case per 10,000 people. But in relative terms, someone might say “The risk has doubled!” And that sounds much scarier, doesn’t it?
Why this comes up so much in pregnancy
You might hear these kinds of statistics when you’re talking about:
- Screening tests
- Whether to induce labour
- Choosing a c-section
- Monitoring your baby’s movements
- Vitamin supplements or medications
The language can feel heavy — but when you break it down, making sense of risk in pregnancy becomes manageable. The actual numbers might feel a lot more manageable than they first sounded.
What to ask in your appointments
You’re allowed to ask for the numbers to be explained clearly. Try one of these:
- “Can you tell me the absolute risk?”
- “What would the risk be if I didn’t do this?”
- “How many people out of 100 (or 1,000) does this affect?”
Asking these questions doesn’t mean you’re doubting anyone’s advice — it just means you’re making sure you understand it, which is crucial for making sense of risk in pregnancy. And that’s what informed decisions are all about.
The Honest Take
Pregnancy already comes with a lot of emotion, and hearing the word “risk” can push all sorts of buttons. Making sense of risk in pregnancy means understanding: numbers are just part of the picture.
The real power comes when you understand what those numbers mean — and how they apply to you. Not to the general population. Not to the headlines. Just to you, your body, and your baby.
So next time someone says “this increases your risk,” take a moment. Ask for the full story. And know that whatever decision you make, you’re allowed to take your time and gather all the facts.
That’s not being difficult. That’s being smart, and strong, and informed.
