Discharge is a generalized term, and is made up of cells from the cervix and vagina, bacteria, mucus, and water. People who are menopausal typically have less discharge as a result of lower levels of estrogen.
You may feel wetter and have a higher sex drive near ovulation, due to an increase in estrogen. Fertile cervical fluid around ovulation provides additional lubrication.
The consistency slippery, sticky or pasty, and stretchy as well as sensation wet or dry of cervical fluid will vary throughout your cycle, and can indicate cycle phases.
Learn more about characteristics and changes in discharge here.
However, sexual arousal is both a physiological and psychological response. Female physical sexual arousal begins with the excitement phase.