My doctor told me that birth control pills contain small

Last updated: 8/8/2022

My doctor told me that birth control pills contain small amounts of estrogen and progesterone, and these hormones prevent me from ovulating. I don't understand how giving me these hormones in a pill would prevent me from ovulating. I assume that it has something to do with the levels of the gonadotropins that I asked about earlier. Can you explain this to me? In the information about Ortho Tri-Cyclen, it mentions that the hormones in the pill make cervical mucus thicker and stickier. Does this happen during my natural cycle? How are estrogen and progesterone involved in this process?