I've been having white milky discharge. no itchiness no smell. sometimes its yellowish but its all the time white sometimes clear.

Hormone related?: If you are talking about vaginal discharge without itching or odor, it is most likely normal physiologic mucus production. The hormone fluctuation during the normal cycle can change the appearance and amount to a marked degree in some women. Sexual stimulation or pregnancy can also affect it alot without adverse symptoms of smell or irritation.