Losing virginity/Advice/Info

So guys 😅im 17, and I was raised to always cherish my virginity and stuff like that and only give it to someone who’s special to me. Welp, I finally have that special someone 🥰. I am completely comfortable with myself, and with him to be having sex. But there’s one thing? I am very small, and only ever masturbated. And he has a big dick? And is experienced and stuff, is there any advice I should know about? Lol I also know to communicate and stuff, if it hurts but is there anything I should be expecting after sex? Or advice about sex in general lol or info about losing my virginity.