Kerr has conceded that Scotland need to win their qualifier against Poland in order to keep their dream of attaining a World Cup alive.
On Thursday, the national women's team played at the Paisley 2021 Stadium on Tuesday, after losing 1-0 in Switzerland, last Thursday.
A mere point behind Poland, who has played a game more, the Scots are third in Group 2.
Kerr, head coach, admitted, "Only one team qualify automatically so it was always going to be a tough ask for us"
"When you measure the [Switzerland] game we weren't too far away and definitely our approach to this game is that we want to win it.
"So many factors that happen in football so we need to make sure that we perform to our optimal best to get any chance to win the game."
Poland are behind Switzerland by eight points though the leaders of the group have played the game more than the Poles, in addition to two more than Scotland.
Attaining victories in their beginning double-header against Albania and Belarus had gotten Scotland's qualifying campaign for France '19 to the best possible beginning before the Schaffhausen defeat of last week.