The foetus is now 41mm — a fig — and has nearly doubled in length since week 9. It is moving constantly, changing position, flexing and extending its limbs in the amniotic fluid. You still cannot feel this, for the same reasons as last week: the foetus is too small and the uterine wall too insulating. But the movement is frequent, purposeful-seeming, and — if you could see a scan at this exact moment — often quite striking. Week 11 foetuses are recognisably human in shape and proportion, even at this scale.
The placenta is now fully functional, handling the transfer of nutrients, oxygen, and waste products with the efficiency it will maintain until birth. The umbilical cord — containing two arteries and one vein — is fully developed. The foetal circulation is running independently of the maternal circulation, with the placenta acting as the interface between the two.
The head remains large in proportion — about half the body length at this stage — but the body is catching up. The ears are migrating from the neck area toward the sides of the head, where they belong. The eyes, which began on the sides of the head, have shifted toward the front, giving the face its distinctly human proportions. The tooth buds noted last week continue to develop. Your baby is becoming, week by week, recognisably themselves.
I had a private scan at eleven weeks just because I couldn't wait any longer. They moved the wand and there was this — person. Moving. Completely formed. Turning around. I had expected something that looked like a scan image from a textbook. I didn't expect it to look so thoroughly like a baby. I cried immediately and embarrassingly.
The physical symptoms of the first trimester — the nausea, the fatigue, the food aversions — continue for many people this week, though for a growing number, week 11 is when the first genuine easing becomes noticeable. Not disappeared, but lighter. A day when food sounds tolerable again, or the nausea lifts for a few hours, or the tiredness feels like ordinary tiredness rather than the bone-level exhaustion of the early weeks. These moments are worth noticing and letting yourself trust.
For those still in the thick of symptoms: you are very close to the end of the period when they are at their most intense. The hormonal environment that has been driving everything is beginning to stabilise, even if your experience of it hasn't yet reflected that. The curve is turning — it just hasn't reached you yet.
Breast changes continue — fuller, more tender, often with more prominent veins and darker areolae. These changes are preparing the breast tissue for eventual milk production and will continue gradually throughout pregnancy.
Appetite may be returning — for people whose nausea is easing, the return of appetite can feel almost disorienting after weeks of food aversion. Eating when hungry and responding to cravings (within reason) is fine. There is no need to compensate for weeks of limited eating; your body will regulate.
Skin changes — some people notice clearer skin as hormones begin to stabilise; others notice the opposite. The 'pregnancy glow' is real for some and entirely absent for others. Both are normal.
This is also the week when the nuchal translucency measurement window for the 12-week scan officially opens. The NT measurement can be taken from 11 weeks and 0 days, so if your scan is scheduled early in week 12, it is technically possible it falls within this week depending on how your dates are counted. The important thing is that the appointment is confirmed and within the 11–13+6 window.
Week 11 has a quality that is almost impossible to describe to anyone who hasn't been there: the specific texture of the last week before the scan. Seven weeks of largely private experience — most of it physically demanding, most of it held in a small circle — are about to meet a moment of external confirmation. The scan is within touching distance. And the closer it gets, the more acutely it is possible to feel both the hope of it and the fear of it simultaneously.
Many people describe an increase in anxiety in the days immediately before the 12-week scan that feels counterintuitive — surely being closer should feel better? In practice, proximity tends to sharpen rather than soften the fear, because the stakes of what might be found feel more immediate. The scan is real. What it might show is real. Holding both the hope and the fear together, without resolving one into the other, is the emotional task of this week.
The night before my twelve-week scan I couldn't sleep at all. I lay there going through every possible outcome. My partner kept saying it would be fine and I kept thinking: you cannot promise me that. In the morning we went in together and it was fine — the baby was there, moving, heart beating. But I think about that night sometimes. The not-knowing. It's one of the hardest things about early pregnancy.
There is also, for many people, a layered quality to week 11 — anticipation of what comes after a successful scan. The announcements. The expanded circle. The shift from carrying something private to carrying something shared. Even that can carry its own complicated feelings: relief mixed with exposure, the pleasure of telling people mixed with a superstitious reluctance to make it too real before the scan confirms it.
All of this is normal. The week before the first scan is one of the most emotionally dense of the entire pregnancy, regardless of how it goes. You are almost through the part of pregnancy that asks the most of you with the least in return.
The themes of week 11 connect to these full topic guides.
The practical work of the last several weeks — the food adaptations, the patience, the quiet covering for someone who couldn't explain why they were struggling — is almost at a transition point. The 12-week scan, in most cases, marks the moment when the pregnancy moves from something private and precarious into something shared and confirmed. For partners, it can feel like a release as much as a milestone.
But it is not there yet, and this week the anxiety that has been building since the pregnancy began often reaches its sharpest point. Your partner may be more withdrawn, less able to be reassured, or more explicitly frightened than at any point in the previous weeks. The response that helps is not cheerful certainty — it is honest acknowledgement. You don't know that the scan will be fine. Neither do they. Being in the uncertainty together, rather than one person trying to reassure their way out of it, is more truthful and more genuinely comforting.
- Confirm the practical logistics of the scan. Know where you're going, when to arrive, whether you need to attend with a full bladder, how long to allow. Removing this source of stress from your partner's plate is useful and easy.
- Talk about what happens if the news is difficult. Not to catastrophise — but because having even a brief conversation about "if it's not what we hope, we'll do X" means you're not making that decision in the moment under acute distress. Most scans bring good news. But being prepared is an act of care.
- Plan something small for after. Whether the scan goes well or not, having a gentle plan for the rest of the day — somewhere quiet, something to eat, time at home together — means neither of you is navigating the immediate aftermath alone and without structure.
Think about who you want to tell — and how — once the scan is done. The 12-week scan is the conventional moment for broader announcements, and whether or not you follow that convention, week 11 is the sensible time to think about it. Not because you are obliged to tell anyone, but because making decisions in advance is less emotionally costly than making them in the glow (or shock) of the moment.
Whether to share the scan image — some people share widely and immediately; others prefer something more private. Both are fine; knowing your preference in advance avoids a decision made on impulse.
Work disclosure — if you plan to tell your employer after the scan, consider who to tell first and when. There is no legal obligation to disclose a pregnancy before 15 weeks before your due date (for maternity leave purposes), but earlier disclosure can open up risk assessments and adjustments that may already be relevant.
What you want the scan appointment to feel like — quiet, celebratory, private, shared. You are entitled to have it feel how you want it to feel.
The 12-week scan is as much a clinical appointment as an emotional one, and it is worth arriving with questions prepared. Once the sonographer has confirmed the heartbeat and you have had a moment to absorb the image, ask:
Sonographers vary in how much they explain unprompted during a scan. Asking this question opens the space for them to narrate what they're seeing, which both demystifies the images on screen and gives you the opportunity to process what is being said in real time rather than wondering afterwards. If anything is identified that requires follow-up, ask clearly: "What does that mean, what happens next, and what is the likely timeline?"