Pregnancy week 31
By week 31 of pregnancy, comfort levels have definitely declined as the mother increases in bulk and as the baby accumulates layers of fat. Also, at 3 1/2 pounds and 18 inches in length, the baby continues to take up more and more room in the womb. As the baby fills bulks up, its skin becomes less wrinkled and transparent. As it continues it’s development, movements become less irregular. At this point in the pregnancy, many women begin to leak colostrums, a pre milk developed to provide for the baby in the first days of it’s life. Usually a clear or partly yellow or orange liquid, colostrums proved vital antibodies and nutrients for the baby. For this reason, it is very beneficial for preterm babies. Although some women may not begin leaking this until delivery, others will notice it much earlier on. If the leakage becomes bothersome, nursing pads can help prevent embarrassment. A hormone known as relaxin is produced by the body while it is pregnant. This causes the pelvis to loosen up in order to enable room for the baby’s upcoming birth. This can be somewhat painful and cause swaying but will be a welcome effect come delivery time.
As the weeks progress, deep breaths may be more and more difficult and perhaps eventually become impossible because the growing uterus pushes against the diaphragm. Yoga is a good way to relax the muscles and help prepare the body for delivery. It is always a good idea to be knowledgeable about the various forms of potential delivery. Although vaginal births are the norm, cesarean births are becoming more and more popular because they can, in certain cases, be safer than vaginal births. However, despite problems that may cause parents to opt for a cesarean, a woman, by law, does have the right to chose a cesarean form of delivery for no particular reason at all. Although some doctors may refuse the treatment, it is important to obtain referrals if the issue is close to one’s heart.
Current guidance (today's medical sources): By week thirty-one the baby is gaining weight rapidly, all five senses are working, and it practises breathing movements with amniotic fluid. Practice (Braxton Hicks) contractions may become more noticeable, and the breasts may begin producing colostrum. Regular, painful, or rhythmic contractions should be discussed with a provider.
Contact your healthcare provider promptly about heavy vaginal bleeding, severe or persistent abdominal pain, a high fever, severe or sudden headache, vision changes, or fainting. Seek urgent care if you are worried — these can be signs that need medical attention.
Sources: NHS — 31 weeks pregnant; Mayo Clinic — Fetal development: The 3rd trimester; ACOG — How to Tell When Labor Begins. Informational only. See our sources & medical-review policy.
Frequently asked questions
How many months is 31 weeks pregnant?
Week 31 falls in the third trimester. Pregnancy is usually counted in weeks (about 40 in total) rather than months, because weeks are more precise.
What is happening to the baby at 31 weeks?
The baby gains weight quickly; all five senses are working; it may practise breathing movements.
What symptoms are common at week 31?
Braxton Hicks may increase; colostrum can begin to form. Symptoms vary a lot from person to person; discuss anything that worries you with your healthcare provider.
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See the week-by-week guide →Informational only — not medical advice. Pregnancy Week to Week is a general educational reference. It is not a substitute for professional medical care, diagnosis, or treatment. Every pregnancy is different: always consult your doctor, midwife, or other qualified healthcare provider about your own pregnancy, and never disregard or delay professional advice because of something you read here. In an emergency, contact your maternity unit or local emergency number immediately.