Should I Forgive Her

We were due to go to a party, staying overnight.
But due to work commitments I could not go, so I said my wife should go.
She has now confessed to me what happened that night.
She remembers having a lot to drink and that is it… until she woke up the next morning.
With a terrible hangover she woke to find herself in bed, naked with a younger guy alongside her.
Startled she got out of bed and almost fell over another guy asleep on the floor!!
Panicking she picked up her underwear and dress and dashed to the toilet.
Locking the door she felt between her legs… her pubic hair was matted and exploring her virgina.. it was sticky!
Both the guys or at least one of them must have fucked and spunked her!!
She is so ashamed and is begging me to forgive her…
Trouble is she is not taking any protection… so what if one of them has made her pregnant!!
We don’t have any kids at the moment.
Should I kick her out???
But if she is pregnant,who will support her?