I’ve nvr put anything……up there

Basically, I’ve nvr penetrated myself at all. Never even used a tampon 😬😬. I’m in my late teens, and I knew it was weird, but it’s just not something I ever thought of doing. A boy i was talking to asked me about it, and when I told him he just said to put fingers up , but I’m writing this post bc he’s likely not an expert lol.

Help???? I’m worried about it hurting or giving myself an infection/ breaking hymen or getting stretched out . I cant talk to anyone irl

Any help would be really appreciated thanks so much ❤️