How likely is it?

Traci

Our kitten got out last night without us knowing for about 20 minutes tops. She is not spayed and we believe a male cat had got a hold of her. She is about 6 months old

We finally found her and took her in but she is kinda skiddish and is sensitive to her tail end being petted or touched by us or our other animals.

How likely is it that she will end up pregnant? This would be the first time that a male cat has done this to her.