Family Planning Plus

The effectiveness of the pill is not affected by longevity of use, nor does use of the pill affect your ability to become pregnant when you are ready to start a family. As long as you are using the pill correctly (which it sounds like you are), your risk of pregnancy is about 1%. There is an 8% risk of pregnancy with typical pill use (forgetting to take pills every now and then, taking them late, or using certain medications with the pill that lowers its effectiveness).

Your fertility should return as soon as you stop the pill (meaning you could possibly become pregnant the month after stopping). However, most experts advise women on the birth control pill to wait at least three months after stopping the pill to attempt pregnancy.  Although the hormones are very quickly passed from your system, this time period will allow you to resume regular menstrual cycles so a pregnancy can be dated.  This also allows the uterine lining to thicken and provide a better site for the placenta to implant and grow.