Week Thirteen of Your Pregnancy


Week 13 Info


Baby - Welcome to your Second Trimester!

Your baby is almost 3 inches long, the size of a medium shrimp.  She will weigh about ¬¨¬∫ lb.  Ears, arms, hands, fingers, legs, feet, and toes are completely formed.  Her fingerprints are present on her tiny fingertips.  Reflex movements allow your baby's elbows to bend, legs to kick, and fingers to form a fist.  Her veins and organs are clearly visible through her thin skin.  Her body is starting to catch up with her head - which makes up just a third of her body size now.  Her heart is beating from 120 to 160 beats per minute and blood is circulating through the umbilical cord to and from your baby.

Weight gain is normal and necessary during pregnancy.   If you've had morning sickness you may have only gained a total of about 2 to 3 pounds during your first trimester.  As your morning sickness improves you may begin to feel increasingly hungry.  Then you may gain about 1 pound per week.  A low steady weight gain is best for a total of 25 to 35 pounds.  Pregnancy is not the time to lose weight.  But pregnant women only need to add about 300 calories a day to their usual diet.  If you are gaining too much weight too fast you may be adding too many calories or eating foods too high in fat and sugar.  An easy area to cut back on excess calories is in your choice of beverages.  You should be drinking 6 to 8 glasses per day.  If you find many of your drinks are in the form of fruit juice, this may be adding excess calories.  It's better to eat the whole fruit, rather than the fruit juice, and drink water instead.  If you miss the taste juice too much, try watering your juice down a little more each day or adding a lemon or lime slice or a few crushed berries to your water.  And remember that your prenatal vitamins are not a substitute for a healthy diet.  Not only do they not contain an adequate amount of calcium but they also don't provide the fiber that is contained in fresh fruits and vegetables.  Fiber is important to aid digestion and to prevent constipation, a common pregnancy complaint.

Your energy is gradually improving as well.  Take advantage of this by slowly incorporated some increased activity in your day.  You should try to exercise each day by walking, swimming, or biking for 15 minutes.  You may be able to feel your uterus slightly above your pubic bone and you may occasionally feel it tighten from mild contractions.

Your baby is still too little to feel movement this week.  

You may still be experiencing mood swings such as being happy or sad for no reason.

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