Mari Nunes | Nutrition & Exercise on Instagram: "What really happens inside your body when you get pregnant 👶🏻⚜️ From the moment of conception, your entire body begins an extraordinary biological adaptation. Every organ changes its function to support another life. First trimester (weeks 1 to 12) 🧠 The brain increases production of progesterone and hCG, which suppress ovulation and signal the uterus to maintain its lining. ❤️ The heart starts pumping harder, raising cardiac output by up to 40