What is RhoGAM and do I need it?

RhoGAM is an injection given to Rh-negative mothers to prevent their immune system from attacking an Rh-positive baby. It is typically given around week 28 and again after delivery if the baby is Rh-positive. Your healthcare provider will test your blood type and advise you.

How much weight should I gain in the third trimester?

The general guideline is about 1 pound per week in the third trimester for a total of about 25-35 pounds for the entire pregnancy if you started at a normal weight. Your provider will track your specific weight gain and may adjust recommendations based on your individual circumstances.

Third Trimester 28 weeks pregnant

Pregnancy Week 28 - Baby Can Blink & Dream

At 28 weeks, your baby can blink their eyes and has regular REM sleep cycles, suggesting they may be dreaming. Your baby is about the size of an eggplant and weighs about 1 kilogram. The third trimester is in full swing, and your baby is gaining weight rapidly.

Eggplant

Baby Size

37.6 cm (head to heel)

Length

1 kg

Weight

Week 28

of 42

Baby Development This Week

Your baby can now blink their eyes and has well-developed REM (rapid eye movement) sleep cycles. The brain is developing more wrinkles and grooves, increasing its surface area for more neural connections. Your baby is gaining weight rapidly, and the lanugo hair is beginning to disappear. Eyelashes are present, and your baby can turn their head toward light sources. The lungs are maturing and producing more surfactant. If born now, your baby would have a good chance of survival with medical support.

Changes in Your Body

Your body is working hard in the third trimester. You may be gaining about a pound per week. Your healthcare provider may want to see you every two weeks now. The top of your uterus is about 3 inches above your belly button. You might be experiencing more heartburn, constipation, and back pain. Some women develop restless leg syndrome. You may notice your belly changing shape as the baby shifts positions. Swelling in the feet and ankles is very common.

Common Symptoms at Week 28

HeartburnConstipationBack painSwellingRestless legsBraxton Hicks

Tips for Week 28

Start sleeping on your left side with a pregnancy pillow for support.
Take an RhoGAM shot if you are Rh-negative (your provider will advise).
Begin stocking up on postpartum supplies.
Practice relaxation and breathing techniques for labor.

When to Call Your Doctor

Seek immediate medical care for signs of preterm labor, preeclampsia, severe headache, visual disturbances, painful contractions, or decreased fetal movement.

Frequently Asked Questions — Week 28

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