Does drugs stop you from getting pregnant?

No, they just make the baby an addict.

Define "drugs"?

Illegal drugs will not stop a pregnancy.

Drugs, such as birth control pills reduce the chance but does not stop them

You'll have to be more specific. What sort of drugs are you taking?

No drug will prevent pregnancy. But, knowing what sort of drug you're taking will help us give you an accurate answer on the risks, should you become pregnant.