How soon after stopping the contraceptive pills will I feel a difference in my body?

Stop "the pill"? After stopping birth control pills, you can expect your body to behave as if you had never been on the pill....Most of the time. Unless you have reached the age of menopause, your periods will quickly resume the character they demonstrated prior to starting the pill. Other factors being equal, pregnancy may result in as little as four to six months...Or even the first month after discontinuation.