Strawberry flowers can be damaged by frost so no, or misshapen fruits develop. Indoors, they may not get pollinated. Our indoor ones have been and gone
and the outside ones have small green fruits on which are swelling rapidly.
Given Womble's famous non fruiting blueberries, are you sure the plant you bought is a strawberry and not a buttercup
. Buttercups love to grow amongst strawberries for the pure joy of misleading humans! They look very similar.