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https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/prenatal-care/art-20045302https://my.clevelandclinic.org/health/articles/11585-conception https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/fetal-development/art-20046151 https://www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/fetal-development/art-20045997

Diana Sidenko

2nd TrimesterFetal developmental processes

• Week 13: Urine forms
• Week 14: Baby's sex becoming apparent
• Week 15: Baby's scalp pattern develops
• Week 16: Baby's eyes move
• Week 17: Baby's toenails develop
• Week 18: Baby begins to hear
• Week 19: Baby develops protective coating
• Week 20: Baby is regularly sleeping and waking
• Week 21: Baby can suck his or her thumb
• Week 22: Baby's hair becomes visible
• Week 23: Fingerprints and footprints form
• Week 24: Baby's skin is wrinkled
• Week 25: Baby responds to your voice
• Week 26: Baby's lungs develop
• Week 27: Baby's nervous system is continuing to mature and ithey also gaining fat.

Conception & implantation process

Conception occurs when sperm fertilizes an egg during ovulation. The egg is released from the ovary and travels through the fallopian tube, where sperm, produced in the testes, swim to meet and fertilize it. The fertilized egg, now called a zygote, divides and becomes a blastocyst. It travels to the uterus, where it may implant into the endometrium. If implantation occurs, pregnancy hormones are released, preventing menstruation. If implantation doesn't happen, the fertilized egg is shed during the next period.

1st TrimesterFetal developmental processes

• Weeks 1 and 2: Getting ready. You're not pregnant yet . Conception typically occurs about two weeks after the last period begins.
• Week 3: Fertilization.
• Week 4: Implantation
• Week 5: Hormone levels increase
• Week 6: The neural tube closes
• Week 7: Baby's head develops
• Week 8: Baby's nose forms
• Week 9: Baby's toes appear
• Week 10: Baby's elbows bend
• Week 11: Baby's genitals develop
• Week 12: Baby's fingernails form

3rd TrimesterFetal developmental processes

• Week 28: Baby's eyes partially open
• Week 29: Baby kicks and stretches
• Week 30: Baby's hair grows
• Week 31: Baby's rapid weight gain begins
• Week 32: Baby practices breathing
• Week 33: Baby detects light
• Week 34: Baby's fingernails grow
• Week 35: Baby's skin is smooth
• Week 36: Baby takes up most of the amniotic sac
• Week 37: Baby might turn head down
• Week 38: Baby's toenails grow
• Week 39: Baby's chest is prominent
• Week 40: Baby's ready to arrive.

Labor

Stage 1: Early Labor and Active LaborEarly Labor: The cervix opens and softens, but less than 6 cm. Contractions are mild and irregular. It may last hours or days. Active Labor: The cervix opens from 6 cm to 10 cm. Contractions become stronger and more frequent. This phase lasts 4 to 8 hours. Stage 2: Birth of The Baby Now it's time to push to deliver the baby. The duration varies from minutes to hours, depending on your experience and use of an epidural. Pushing should be done in different positions, as guided by your healthcare team. Stage 3: Delivery of the Placenta After the baby is born, the placenta is delivered within 30 minutes. Mild contractions help expel it. The healthcare provider ensures the placenta is intact, and your uterus continues to contract to reduce bleeding.

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