Ans - The follicular phase is the first day of the period. The following events occur during this follicular phase: Hormones like Follicle stimulating Hormone (FSH) and Luteinizing Hormone (LH), are released from the brain and travel in the blood to the ovaries.The hormones stimulate the growth of about 15 to 20 eggs in the ovaries which has a separate shell known as a follicle. The FSH and LH also trigger a rise in the production of the female hormone called estrogen.