At 4 weeks pregnant, you might start to notice some pregnancy symptoms.Welcome to the beginning of the embryo stage. It’s now implantation time – the blastocyst will begin burrowing into your ...

With each week of pregnancy, your baby-to-be is developing in leaps and bounds. In the early stages, they are called a zygote. They then progress to an embryo, fetus, and finally, baby. You might ...

I am about 4 weeks pregnant and have a bad cold. I am using Iladian nasal spray and nothing else. Are there any risks to the embryo due to the cold so early in my pregnancy? Is there any medication ...

Week 3. Baby: Congratulations!If your egg and your partner's sperm have joined successfully, your embryo is really there, although it's very small -- about the size of the head of a pin.

Researchers included more than 4.5 million pregnancies, including some that were naturally conceived and those done via fresh or frozen embryo transfers. Participants were 20 to 44 years old and ...

New research has linked the use of frozen embryos in in vitro fertilization (IVF) with a higher risk of pregnancy complications linked to high blood pressure. The massive study, which was ...