Changes

: During [[intercourse]] some [[Sexually Transmitted Infection|sexually transmitted infection(STI)]]s can be passed from one person to another.: [[Human]]s use several methods to prevent [[intercourse]] from spreading a [[infectionSexually Transmitted Infection|STI]] and also to prevent [[pregnancy]].:*Condom - A covering placed over the [[penis]] stops [[semen]] entering the [[vagina]] and can prevent [[infectionSexually Transmitted Infection|STI]]s being spread.:*Diaphragm - A cap placed inside the [[vagina]] to prevent [[semen]] getting past the [[cervix]]. This does not prevent the spread of [[infectionSexually Transmitted Infection|STI]].:*Contraceptive Pill, or Patch - A [[drug]] which prevents the [[fertilisation|fertilised]] [[ovum]] [[implantation|implanting]] into the wall of the [[uterus]]. This does not prevent the spread of [[infectionSexually Transmitted Infection|STI]].:*Spermicide - A chemical in a cream which can kill [[Sperm Cell|sperm]] before they reach the [[ovum]]. This does not prevent the spread of [[infectionSexually Transmitted Infection|STI]].