Your baby this week
4 weeks pregnant

In the know

Pregnancy test

How common are false-negative results from home pregnancy tests? According to US Pharmacist, "False-negative results occur primarily due to procedural errors.

If the test is taken too soon after conception, a false-negative is highly likely due to the lack of HCG in the urine during the first few days following conception. Also, if the urine sample is shaken, stored in a waxed cup or cup containing soap residue, or not allowed to return to room temperature after refrigeration, a false-negative could occur. Use of carbamazepine also could cause a false-negative result." (Go back to yesterday's page to read about false-positive results.)

Get more tips on pregnancy testing right here.

Oh, how your baby grows

From even before you get that positive pregnancy test, through forcing down those daily prenatal vitamins and past the cravings and nausea, your little baby is blissfully developing.

Click here to take a peek at the incredible changes the embryo and fetus experiences in the first weeks after conception.

Support & advice

"So, I just had a tiny amount (1/4 inch round?) of pinkish red blood when I wiped. I am 9 days past ovulation (dpo). Does anyone have any experience with this? It has never happened to me before. I don't have cramps or anything. I was totally surprised by it. Any feedback?" - Laura

Meet up with other moms who are trying to get pregnant and wondering if they were successful this cycle right here!

Did you know?

The corpus luteum is a structure that develops in the ovary and secretes progesterone, which is vital to maintain a uterine environment capable of supporting pregnancy. When the corpus luteum stops functioning, and if a fertilized ovum does not embed in the uterine lining and the placenta begins producing hormones of its own, hormone levels quickly decrease and menstruation begins.

Check here for more conception and fertility definitions.

Photo galleries