Sex issues

Alright I’ve been dating my bf for about a year and we have tried to have sex so many times and it just doesn’t work? There’s no issue when it’s oral or if he’s using his fingers but as soon as he tries to go in me it just doesn’t work. Has this happened to anyone else? Doesn’t matter if it’s with or without a condom it just doesn’t go in! Yes I am definitely wet and like I said there’s no issues when he fingers me so I’m just confused. I am a virgin so perhaps that’s the issue? Please help a girl out and give me some advice