Hormonal Cheat Sheet

A Snapshot of Your Body’s Natural Birth Chemistry

By Dr Erin Kelly | Hobart HypnoBirthing Co

hCG — The Pregnancy Starter

• What it does: Signals pregnancy and supports early placenta formation.

• When it peaks: Around 8–11 weeks.

• Fun fact: It’s what turns your home pregnancy test positive!

Progesterone — The Calming Protector

• What it does: Keeps the uterus relaxed, prevents early contractions, supports implantation.

• Promote naturally: Rest, hydration, and reducing stress.

Estrogen — The Growth Promoter

• What it does: Boosts blood flow and supports the uterine lining.

• Promote naturally: Balanced diet, gentle movement, deep breathing.

Endorphins — Nature’s Pain Relief

• What it does: Soothes discomfort and creates feelings of pleasure; up to 40× stronger than morphine.

• Promote naturally: Breathe deeply, stay calm, avoid unnecessary interruptions.

Oxytocin — The Love Hormone

• What it does: Drives labour surges, bonding, and breastfeeding.

• Promote naturally: Soft lighting, loving touch, privacy, skin-to-skin contact.

Melatonin — The Sleep Sidekick

• What it does: Works with oxytocin for steady, rhythmic contractions. Aids sleep.

• Promote naturally: Keep the birth space dim and peaceful.

Adrenaline & Noradrenaline — The Energy Surge

• What they do: Provide energy and focus during the final stage of birth.

• Promote balance: Stay relaxed and supported; avoid bright lights or unnecessary stress.

Relaxin — The Softener

• What it does: Softens ligaments and opens the pelvis for birth.

• Promote naturally: Gentle stretching, upright positions, patience with your changing body.

Prolactin — The Mothering Hormone

• What it does: Supports milk production and emotional bonding.

• Promote naturally: Skin-to-skin contact, early and frequent breastfeeding, calm environment.

How to Help Your Hormones Flow Naturally

• Create a calm, private birth environment (low light, familiar people, quiet space).

• Use relaxation, breathing, and visualisation tools to lower fear.

• Choose support people who make you feel safe and informed.

• Keep baby close after birth to encourage oxytocin and prolactin.

• Trust your body — nature has done this beautifully for millennia.