The most common reason women become pregnant on the Pill is improper usage. If you do become pregnant while taking the pill, immediately stop taking them. There have not been any reports that demonstrate the hormones in the pill adversely affect a developing fetus. This is the same rate of malformation in pregnant women who did not conceive on the Pill. Back to Top 14.
Side effects vary from person to person.
Some women experience little, if any side effects, while others have significant side effects. Keep in mind that there are many formulations of the Pill and if you did not tolerate one formulation there are other combinations you may tolerate better. For most women on the current low dose pills, there is no weight gain associated with usage. Rarely, some women have significant weight gain and have to discontinue usage. However, if a woman does develop a blood clot while using the Pill there usually is an underlying clotting problem.