Pain in vagina

This is really embarrassing for me to talk to anyone about so I'll just post it here. I can use tampons and etc. that doesn't hurt or anything. One finger doesn't hurt either but 2 fingers or

anything bigger than a tampon hurts a whole lot. I'm a virgin and choose to stay that way until marriage but I'm just worried that one day when I do have sex it's going to hurt so bad. I just want to know if something's wrong with me and what I can do about it.