Yes, you can get pregnant and be on the pill. The pill is not 100% effective and therefore it is possible. You cannot "stop" a pregnancy. Your only option would be an abortion or to carry full term. Either way if you are pregnant you should stop taking your Birth Control right away.
Abortion is about the only thing to terminate a pregnancy.
A pil is a kind of drug.
USA
Moon Pil-Hee was born in 1982.
Son Sang-Pil was born in 1973.
Yong Pil Rhee died in 2004.
Han Pil-Hwa was born in 1942.
Lee Pil Mo was born in 1974.
The area of Pil-dong is 1,080,000.0 square meters.
Yong Pil Rhee was born in 1933.
Seo Jae-pil died in 1951.
Seo Jae-pil was born in 1864.
Kim Jong-pil was born on January 7, 1926.