Periods | Hormones | Fertility on Instagram: "An IUD (Intrauterine Device) is a tiny T-shaped birth control device placed inside the uterus during a quick medical procedure where the doctor gently cleans the cervix, measures the uterus, and inserts the folded IUD through a thin tube before it opens into position. Once inside, a copper IUD releases copper ions that stop sperm from surviving, while a hormonal IUD releases progestin that thickens cervical mucus, thins the uterine lining, and may st