The risk of a miscarriage decreases as you reach the last week of your first trimester. You might notice that around 13 weeks pregnant, your symptoms change a bit. You might actually be able to get through the day without nausea (if not now, soon) or feeling the need for a nap.
At this stage your breasts may have already started producing colostrum, a nutrient-rich fluid that precedes the production of breast milk for a few days after birth. You may notice stretch marks appearing around your abdomen, breasts, hips, and buttocks. Gaining weight slowly may help reduce the chances of getting stretch marks, so it’s important for you to follow a well-balanced diet.
But you may be experiencing a few of followings too-
- Visible veins You can see all those blue streaks under your skin because you have increased blood flow.
- Increase in energy The second trimester is known as the least symptomatic—and the most energetic. As you start to feel more like yourself and get that energy surge, you’re going to want to knock a bunch of to-dos off your list. Also, if you’ve found yourself too sick and tired to exercise lately, now’s the time to get back to a fitness routine. Exercise will only benefit you and baby and can even make labor easier. Worth it!
- Increased sex drive If you’re one of those lucky pregnant women who feels up for a roll in the hay at 13 weeks. You may notice a bit of post-coital spotting. A little spotting is normal simply because your cervix is more sensitive. But heavy bleeding (like a period) isn’t, so call your doctor if it’s more like a flow.
If you’re 13 weeks pregnant with twins, you might still be experiencing some morning sickness and fatigue. That’s because twin fetus have produces more pregnancy hormone hCG in their systems. If your nausea and vomiting is super severe, definitely bring it up to your OB. If you’re able to hold down food and liquids, but you’re still feeling ill, just wait it out a little longer.
Development of Baby
Many significant changes are occurring. At 13 weeks pregnant, baby is as big as a lemon. Your 13-week fetus is about 3 inches (7.5 cm) long and weighs about .81 ounces (23 grams), and proportion-wise, his or her head is now about 1/3 the size of the body instead of 1/2.
There is still plenty of room to grow inside of the uterus, and the fetus now looks more like a baby. His or her eyes are moving away from the sides of the head and are drawing closer to one another, and the fine hairs that make up the eyebrows are starting to grow. Her abdomen also continues to grow, enabling the intestines to continue to move into position.
The pancreas begins to produce insulin, which is critical for regulating sugar levels after birth and later in life. The bones continue to harden. Oxygen and nutrients pass through the placenta to your baby and carbon dioxide and waste pass from the baby back to you.
Your baby also reached another milestone as it has a functional intestinal system at this point.
Talk to your healthcare practitioner before applying any lotions or creams to try and stop stretch marks from forming. There are several brands of skin care products that are safe for pregnant women to use.
Pregnancy at 13 weeks calls for a weight gain increase. OBs recommend you gain weight in the healthiest way possible—that means slowly and steadily throughout your pregnancy. Here are the weight gain guidelines outlined by the American College of Obstetricians and Gynecologists (ACOG):
If you’re underweight (BMI under 18.5):
- Your recommended total pregnancy weight gain is 28 to 40 pounds.
- In the second and third trimesters, aim to gain about a pound (1 to 1.3 pounds to be exact) per week.
If you’re average weight (BMI of 18.5 to 24.9):
- Your recommended total pregnancy weight gain is 25 to 35 pounds.
- In the second and third trimesters, aim to gain about a pound or a little less (0.8 to 1 pound to be exact) per week.
If you’re overweight (BMI of 25 to 29.9):
- Your recommended total pregnancy weight gain is 15 to 25 pounds.
- In the second and third trimesters, aim to gain a little over a half pound (0.5 to 0.7 pounds to be exact) per week.
If you’re obese (BMI of 30 and above):
- Your recommended total pregnancy weight gain is 11 to 20 pounds.
- In the second and third trimesters, aim to gain about a half pound (0.4 to 0.6 pounds to be exact) per week.
If you’re 13 weeks pregnant with twins:
- Your recommended total pregnancy weight gain is 37 to 54 pounds.
- In the first half of your pregnancy, aim to gain about a pound per week. In the second half, aim to gain a little over a pound per week.
Of course, you don’t want to stress yourself out about these numbers. What’s important is that you’re eating a healthy diet full of a variety of different foods, eating about 300 extra (nutritious) calories per day more than you did pre-pregnancy and getting plenty of exercise.
Next Week – Week 14 (Start of Second Trimester)