Wikipedia begs to differ.
"The relationship between hormones and female sexual motivation is not as well understood. Estrogen and progesterone typically regulate motivation to engage in sexual behaviour for female mammalian species. In particular, estrogens have been shown to correlate positively with increases in female sexual motivation, and progesterone has been associated with decreases in female sexual motivation. The periovulatory period of the female menstrual cycle is often associated with increased female receptivity and sexual motivation. During this stage in the cycle, estrogens are elevated in the female and progesterone levels are low. At this time, mating can result in female pregnancy."