Your baby this week
3 weeks pregnant

Your baby now

From conception to the eighth week of pregnancy, the baby growing inside you is called anembryo. After that point, it becomes known as a fetus (meaning "young one").

Does weight affect conception?

Are you carrying a little extra weight? If so, you might be glad to know that this may not affect conception. Impaired uterine function is not the cause of lower birth rates among overweight women using fertility technologies to become pregnant, according to a Mayo Clinic study published in the August 2003 issue of Fertility and Sterility.

Doctor consultPrevious studies have shown that overweight women using fertility technologies such as in vitro fertilization have significantly lower birth rates. 

The Mayo Clinic study results painted a more encouraging picture for overweight women using fertility technologies. "Our research shows that when we control variables such as hormone levels and embryo quality, the uterus works fine, regardless of body mass. The key is good embryos," says Ian Tummon, MD, a Mayo Clinic reproductive endocrinologist who was the study's principal investigator.

To read more, click here.

Eating for two

While you don't want to obsess over every pound, eating well is important during pregnancy, so be sure to check out the low fat section over at ChefMom, which includes Double-the-Serving Stew that adds richness to your stew while "secretly" boosting the vegetables in it.

By removing the first set of vegetables halfway through the cooking process, blending them, pouring them back as sauce, and adding new cut-up vegetables, you're doubling your vegetable servings and adding lots of flavor and texture to the final stew. Yum!

When to worry

The embryo moves into the uterus at about 80 hours after ovulation, and begins to implant in the uterus about 72 hours after that.

It's still early days, but it's worth being aware of the warning signs of an ectopic (tubal) pregnancy. For one, severe lower abdomen pain (almost always on one side only) starting anywhere from the 6th to 12th week of pregnancy.

To find out about other ectopic pregnancy symptoms, see here.

An ectopic pregnancy (pregnancy outside of the uterus, usually in the fallopian tubes) can cause bleeding and cramping in early pregnancy but are much less common than miscarriages. There can be a rupture of the involved fallopian tube which can cause internal bleeding, weakness, fainting and even shock. This is an emergency situation and requires prompt treatment.

An ever rarer reason for bleeding in early pregnancy can be a molar pregnancy, which results in the growth of abnormal tissue in the place of the embryo. This requires treatment with special medications and removal of the abnormal tissue.

For more information on possible causes of bleeding in early pregnancy, please click here.

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