By the time you’re 4 weeks pregnant, you can usually get a clear positive on a urine pregnancy test. It’s a funny thing, but your egg may have only been fertilized in the last two weeks.

Each week offers information about your body and the baby's as well as helpful advice you can use throughout your pregnancy. Let's start with a peek inside the womb. Weeks 1 and 2 ...

On average, a month is 4.3 weeks, so that means the number of weeks and months of pregnancy don't match up exactly. And ...

4 weeks pregnant and chances are you’ve missed a period so you already know something’s up. Week 4 of pregnancy is when most women find out they’re pregnant – either through a home ...

During the fourth week of your pregnancy (measured from the first day of your last period), you may begin to have positive results on a home pregnancy test. For the sake of accuracy, it's best to ...

In week 4 of your pregnancy, a blastocyst embeds itself into the uterine wall. This process is called implantation. It divides into two parts: the half attached to the uterine wall becomes the ...

Drinking alcohol in the first 3-4 weeks of pregnancy - a time when many women are unaware they are pregnant - may alter gene functioning in the brains of offspring, research shows.