The periovulatory, or follicular, phase: A layer of cells within the egg starts to develop and grow to be more like mucus. The lining with the uterus begins to thicken. Rahim bir kas dokusudur, tüm kaslar gibi kas?l?r ve gev?er. Kanama süresince daha ?iddetli kas?l?r ve a?r? olarak hiss