11 weeks pregnant means 11+0 to 11+6 weeks counted from the first day of your last menstrual period: about 2 months and 16 days, so you are in the 3rd month of pregnancy. Two things stand out this week: the placenta is about to take over feeding your baby, and the window for the nuchal translucency (NT) scan and combined screening opens.
11 weeks pregnant (11+0 to 11+6 weeks) is about 2 months and 16 days from the first day of your last period. You are in the 3rd month and in the last weeks of the first trimester.
According to the NHS week-by-week guide, your baby is now about 41 mm long from head to bottom, roughly the size of a fig. The head is still large compared with the body, but the body is catching up fast. Fingers and toes are separating, and tiny fingernails and small ears have appeared. Your baby is moving around, although you are not expected to feel it for several more weeks.
ACOG's summary for weeks 9 to 12 of pregnancy lists these changes:
ACOG explains that the developing baby is called an embryo for the first 8 weeks after fertilisation and a fetus from 9 weeks after fertilisation until birth. Because pregnancy weeks are counted from the first day of the last period, ACOG notes that pregnancy is assumed to start 2 weeks after that date.
As your bump starts to show, muscles and ligaments stretch and can cause aches around your tummy. Your body is now pumping up to 50% more blood than usual, which can make you feel hot, sweaty or dizzy. The hormones involved while the placenta takes over may add to tiredness and mood swings (NHS week-by-week guide).
Symptoms the NHS lists for this week include nausea, mood swings, a metallic taste, sore breasts, indigestion and heartburn, headaches, dizziness, a heightened sense of smell, a white milky discharge, period-like cramps, bloating, brown patches on the face (chloasma), greasier skin and thicker hair. Gentle exercise such as walking can help with tiredness.
Nausea usually starts at 5 to 6 weeks, peaks at around 9 weeks and settles by 16 to 20 weeks for most people, but it continues into the third trimester for about 15 to 20% (UpToDate, 2026).
The Turkish Ministry of Health Antenatal Care Management Guideline (2026) recommends the first antenatal visit within the first 14 weeks. Along with blood pressure, weight and an examination, it includes a full blood count, blood group and Rh, hepatitis B (HBsAg), syphilis screening, an HIV test with your consent, TSH, rubella IgG if your immunity is unknown, a urinalysis and a urine culture. If the mother is Rh negative and the father Rh positive, an indirect Coombs test is done and, if negative, repeated at 28 weeks. The guideline lists the nuchal translucency (NT) ultrasound and the combined test between 11 and 14 weeks.
NICE NG201 (England) schedules this scan between 11+2 and 14+1 weeks to date the pregnancy, detect twins or more and, if you choose, screen for Down's, Edwards' and Patau's syndromes.
ACOG (USA) says first-trimester screening (an NT scan plus a blood test of two substances) is done between 10 weeks and 13 weeks 6 days, and cell-free DNA testing (NIPT) can be done from 10 weeks. ACOG notes that at the edges of this window some babies may fall outside the required crown–rump length range; ISUOG uses a CRL of 45 to 84 mm. Screening tests do not diagnose: a high-risk result is confirmed with a diagnostic test such as chorionic villus sampling (CVS) or amniocentesis.
According to ISUOG's 11–14-week scan guideline (2023), this scan confirms that the pregnancy is ongoing and how many babies there are, dates the pregnancy accurately, screens for chromosomal conditions and can pick up major structural anomalies early. Gestational age is based on the best crown–rump length (CRL) measurement between 45 and 84 mm; over these three weeks the baby almost doubles in length. NT measures the fluid at the back of the baby's neck (NHS).
| Symptom | Usually | Seek care if |
|---|---|---|
| Pulling pain in the groin or sides of the bump | Your growing bump and stretching ligaments can cause aches around your tummy (NHS). | Get help straight away if it hurts a lot or comes with bleeding, fever or leaking fluid (NHS; Turkish Ministry of Health danger signs). |
| Light spotting | The NHS lists light spotting among possible symptoms this week; bleeding in pregnancy does not always mean a pregnancy loss (UpToDate). | Seek care for any bleeding: bleeding and cramping also occur with miscarriage or ectopic pregnancy, so assessment should not be delayed (NHS; UpToDate). |
| More vaginal discharge | A white, milky, mild-smelling discharge is common in pregnancy (NHS). | If the colour, smell or texture changes, or you have itching, soreness or pain when peeing (NHS). |
| Nausea and vomiting | For most people it settles by 16 to 20 weeks (UpToDate). | If you cannot keep anything down: severe nausea and vomiting is a danger sign in the Turkish Ministry of Health guideline. |
These are danger signs or emergency referral criteria in the Turkish Ministry of Health guideline; contact your doctor or go to the nearest emergency department without waiting.
11 weeks pregnant covers days 77 to 83 from the first day of your last period, or about 2 months and 16 days. You are in the 3rd month; by ACOG's definition the first trimester lasts until 13 weeks 6 days.
Usually not on ultrasound yet. The NHS says the sex organs have formed by around week 12 but most scans cannot tell the sex until later, and UpToDate notes that ultrasound usually shows it at 17 to 20 weeks. A cell-free DNA blood test (NIPT) at 10 to 13 weeks can report the sex along with chromosome screening, but that is not its purpose, and a failed result or a wrong sex assignment is possible (UpToDate, 2026).
The windows differ by a few days: the Turkish Ministry of Health guideline says 11 to 14 weeks, NICE 11+2 to 14+1 weeks, ISUOG 11+0 to 14+0 weeks and ACOG 10 weeks to 13 weeks 6 days. ACOG adds that laboratories use slightly different windows and that at the edges some babies fall outside the required crown–rump length range (ISUOG: 45 to 84 mm), so book according to the centre doing your test.
Stretching ligaments can cause mild groin aches, and the NHS lists light spotting among possible symptoms. Still, get any bleeding checked: it often does not mean a loss, but miscarriage and ectopic pregnancy can also cause bleeding and cramps (UpToDate, 2026). Do not wait if you have severe pain, fever or leaking fluid.
Last updated: . All sources have been confirmed with their latest versions. This content is for educational purposes and is not a substitute for a doctor's examination.