Discharge is your bodies natural way of cleaning itself. If you use douches, DON'T. They are really bad and cause your bodies natural PH to be washed away which can cause the bad stuff like the bacteria that cause yeast infections to take over......not fun.
The commonly stated range of human hearing is 20 Hz to 20 kHz. Under ideal laboratory conditions, humans can hear sound as low as 12 Hz. Humans are most sensitive to (i.e. able to discern at lowest intensity) frequencies between 2,000 and 5,000 Hz.
Hearing range in humans is commonly between 20 and 20,000Hz. As we get older, this range gradually declines and teenagers can typically hear higher frequencies. Vowel sounds are typically low frequency, while consonants are higher. This audiogram shows a sine wave going through human audio spectrum.