Phone rape crisis. They'll understand, even if you can't say it. They really will make you feel so much better - if only because they know what you are feeling without you needing to express it.
You don't need to talk about it with them...you make mundane conversation, or they can talk to you about next steps, or you can talk about it if you want too. It's up to you entirely...
Please phone them, or if not, phone the police. They can help more than you imagine.
Rape crisis - 0808 802 9999