Your little one gained around half-an-inch in the last week and continues to steadily grow! Now about the size of a prune, your baby has reached an important developmental milestone. At week 10, your baby, no longer an embryo, is officially considered a fetus. Your little one's brain is speedily developing; and though the head is about half the length of the entire body, everything will eventually even out into proper proportions.

This marks the beginning of the fetal period, in which the organs will rapidly mature. Once your baby reaches the fetal period, they become less susceptible to certain birth defects and congenital malformations. It is important to remember, however, that certain toxins, such as second-hand smoke, are not good for your developing baby and should be avoided.

This week, the kidneys, liver, heart, and intestines are forming tissue.

Your baby's heartbeat is approximately 160-170 beats per minute! Toenails and hair have started to grow, adding tiny, cute details to your baby's body. The limbs are now able to flex, wrists can bend, and hands can come together. The legs may even be long enough for the feet to meet in front of the body. Your baby will even start swallowing and kicking this week, though you won't feel anything at this point. The movements are still too little.

If you haven't looked in the mirror lately, it’s time to check out that belly bump you're sporting! At week 10, your uterus is the size of a grapefruit, versus the pear-size uterus you had before getting pregnant, so your midsection is a bit fuller now. And though it may not be time for maternity clothes, don't be surprised if your normal wardrobe is beginning to feel snug! If you wish to avoid maternity clothing for as long as possible, look for forgiving pants and skirts with elastic waistbands.

Are you wondering why your veins are much more noticeable these days? This is because your blood volume increases 40 to 50 percent during pregnancy. So, if you are becoming more and more aware of the veins in your breasts, legs, and stomach, don't worry! This is totally normal.

It's also completely normal to feel some aches and pains in your abdomen as it stretches to accommodate your baby's growth. This is called round ligament pain. If you're concerned at all about any aches and pains in your abdomen, mention this at your next midwife or doctor appointment.

Depending on your level of fitness during this pregnancy, you might find it easier to forget about your morning sickness, midday sickness, nighttime sickness, and/or fatigue as you participate in a wide range of physical activities. Swimming, for example, is an excellent option. If you don't have access to a pool, walking is a great option too. Exercise builds muscle tone, strength, and endurance, all of which will help you carry the weight you are about to gain and prepare for labor. If you have any doubts or questions about exercising, check with your midwife or physician. Your doctor can help you decide on the type and level of exercise right for you.