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This week highlights

It's a date!

Our calculator can determine your due date based on the date of your last menstrual cycle or the date of conception.

The embryonic stage begins

Song “The Spring Blossom” (Na Ying)
据中国的官方媒体报道,2017年中国电影票房收入增长了13.5%,而今年仅略有下降。

Consider carrier screening

It's a simple blood or saliva test to see whether your baby is at risk for any genetic disorders, such as cystic fibrosis or sickle cell disease.

36 weeks to go!

You're in your first month

Fetus icon

Baby development at 4 weeks

Your little embryo

人力资源和社会保障部的一位官员称:“根据往年的经验,在报名窗口快关闭时,报名人数会剧增,尤其是在最后三天。”
The Chinese-made 3D fantasy/adventure film "Monster Hunt" broke a string of box-office records on its release in the country in July 2015, becoming the highest grossing film of the year in the Chinese mainland.
“…brought his dog.”
上榜的12所美国学院平均而言是性别比例最为平衡的,女性学员比例为48%。

embryo made up of hypoblast and epiblast
Your baby at 4 weeks Tap the plus for more details
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Your baby is about the size of a poppy seed

poppy seed

Primitive placenta

《纽约时报》记者丹尼斯?格莱迪进入一间手术室,观察一项对24周、患有先天性脊椎裂的胎儿进行治疗的实验性技术。医生希望通过手术缓解患病婴儿的症状。他们目前已进行了28例手术,效果良好。报道中的胎儿母亲的预产期为1月14日。
To Japanese creators Kazutaka Kurihara and Koji Tsukada for developing the SpeechJammer, a device that uses delayed auditory feedback to shut up participants in a discussion. This kind of system has been used in speech therapy to reduce stuttering among those with that particular speech disturbance.
Agents and investment institutions are now flooding the sector, causing additional changes to content and platforms in the world's second-largest economy, the report said. A number of Internet gurus, including Lei Jun, investor and founder of tech firm Xiaomi, Zhou Hongyi, CEO of Qihoo 360 Technology, and China's richest man Wang Jianlin have all directly supported live video-streaming websites, a strong indication of the growing interest from capital investment.

embryo in uterus at 4 weeks
Your body at 4 weeks Tap the plus for more details

Amniotic sac and yolk sac

Swyft有50家短信应用合作伙伴,包括Kakao Talk, Facebook Messenger, BlackBerry Messenger和 Line。这种合作让这家只有11个人的小公司能接触到25亿注册用户。随着利用短信应用赚钱的办法不断演化,这家年轻的创业公司已探索出一条可让各大品牌挤进人们聊天领域的生财之道。(财富中文网)
《少年收容所》(Short Term 12)是独立制片的小型影片之一,然而却会大大地影响观众。这部低成本电影片长仅96分钟,背景是一个针对问题青少年的收容设施。然而德斯汀?克里顿(Destin Cretton)的导演和布里?拉尔森(Brie Larson)的表演让这部电影跻身年度最佳影片之列。拉尔森几乎可以肯定无缘奥斯卡奖(今年的竞争异常激烈),但她对所扮演的女主角格蕾丝(Grace)的刻画极具水准,格蕾丝是一名20多岁的年轻保育员,她自己的生活远非平静无波。

See what fraternal twins look like in the womb this week.

Pregnancy symptoms during week 4

No symptoms?

Don't worry. Many women don't feel anything yet this week. In fact, most early pregnancy symptoms don't start until about 6 weeks.

Tender, swollen breasts

Breast tenderness can be one of the earliest signs of pregnancy. It usually starts around 4 to 6 weeks and lasts through the first trimester.

Fatigue

For many women, exhaustion is one of the first signs of pregnancy. But other women hardly seem to slow down at all.

Nausea or vomiting

Morning sickness can strike at any time of day. It usually starts around 6 weeks of pregnancy but can begin as early as 4 weeks. Some women have cramping as well.

两家美尔凯特对簿公堂 合肥公司被判停用

If you've been charting your temperature and it stays elevated for 18 days in a row, you're probably pregnant.

Pregnancy checklist at 4 weeks pregnant

Take a pregnancy test

If you haven't already, you should be able to find out whether you're pregnant. For the most accurate results, wait until a few days after you miss your period before you take a pregnancy test.

Make a prenatal appointment

If the test is positive, call your doctor or midwife and schedule your first prenatal appointment. In the meantime, you can calculate your due date, but remember that it's just an estimate. You're just as likely to go into labor any day during the two weeks before or after.

纵观今年红木市场行情:内涵回归,价值浮现

If you've been trying to conceive with no success for a year or more (or for six months if you're over 35), talk to your healthcare provider about a workup for you and your partner to spot possible fertility problems.

4 weeks pregnant bellies

This week's video

Show sources

ACOG. 2015. FAQ156. Prenatal development: How your baby grows during pregnancy. American College of Obstetricians and Gynecologists. 加拿大整体排名第二,幅员辽阔,位居世界第二。“生活质量”与“教育最佳国家”均居首位。 [Accessed May 2019]

FDA. 2014. Home Use Tests: Pregnancy. U.S. Food and Drug Administration. So, yeah, if this edition of the World Cup seems a bit more exciting than you're used to, this is a big reason why. [Accessed May 2019]

March of Dimes. 2015. Prescription drugs, over-the-counter drugs, supplements and herbal products. 而他的妈妈则称他只是一个替罪羔羊。她在已经在网络上发布的信件中写道:“这个公司正在试图去指控一个14岁的孩子。” [Accessed May 2019]

Mayo Clinic. 2015. Prenatal vitamins: Why they matter, how to choose. 'Fruitvale Station' represents another remarkable feature debut, by the director Ryan Coogler. Its subject matter-the fatal shooting of Oscar Grant, a black, unarmed 22-year-old by a white transit cop in Oakland, Calif.-might have made a documentary. Mr. Coogler had the better idea of exploring it as a dramatized, and to a considerable extent fictionalized, account of the day in Oscar's life that preceded his death. He's played by Michael B. Jordan, whose performance can break your heart or fill it with joy, sometimes simultaneously. [Accessed May 2019]

MedlinePlus (ADAM). 2015. Fetal development. 今天砸百万元当房奴 明天真能变成千万富翁? [Accessed May 2019]

Kate Marple is an award-winning journalist with more than 25 years of experience writing and editing health content.   
 
 
 
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