Yes this is rape IF it happened as you say.
If you want to defend your honour and aren't telling the full truth the law will definitely find out and not necessarily treat you favourably. I'm not trying to be mean but sometimes you've got to be cruel to be kind. I will say don't make the mistake many other young girls have in the past because the truth always comes out in the end.
There was a girl at my high school boasting about how she was going to have sex in an old factory in Lancaster with some filthy skater, she did the deed, decided she didn't like it and told the cops. She was a very naive girl and grew up a lot after being told off but sometimes there will be examples made out of liars. You have been warned.
But if you have been raped that's terrible and you should go to the cops and discard my warning.