Some cases of decreased libido have been reported with the pill, however this is uncommon. In fact, women may be more likely to have increased sexual drive, especially when taking pills with a higher progestogenic component. If the pill is taken correctly, ovulation is unlikely. The pill should be taken daily around the same time each day to avoid the chance of ovulation occurring. Most of the time that ovulation does occur while on the pill is due to the woman taking it inconsistently or perhaps using medications that may negate its effectiveness.
Antibiotics are an example of medications that interfere with the effectiveness of the pill.
Quite simply, no. The pill has not been shown to affect your fertility, regardless of how many times you stop and start taking it. There is no set time period of how long a woman should be on the pill. It is certainly appropriate to continue using the pill as long as you are not yet ready to start a family. The pill has not been shown to impact future fertility.