WTF is STI? Which protection suits your style? From condomAuch Präservativ genannt. Ein Kondom ist eine schlauchförmige Gummihülle, die über den Penis gestreift wird, um während des Geschlechtsverkehrs eine Barriere zu bilden und so eine Schwangerschaft und/oder die Übertragung von sexuell ... know-how and STISTI is the abbreviation for "sexually transmitted infections". Sometimes only the abbreviation STI is used in specialist circles or in brochures. stories to unwanted pregnancyPregnancy is the time between the fusion of sperm and egg and the birth of the baby, which normally lasts around 9 months. The first sign of pregnancy is the absence of menstrual bleeding, which would otherwise occur regularly. - with this knowledge, you'll always be on the safe side.