Why does it hurt?

So I just had sex today. I’m 17 and he’s also 17 but he’s very large compared to anyone I have ever been with not to give tmi but he’s over 8 inches and it’s very thick all around. Is it normal to hurt a lot? Whenever I pee it still burns and it’s been about 6-7 hours. It’s not my first time either but I’m never experienced this.