Tampon help

Penny

Hi I’m a 15 and I’m having tampon problems Every time I try to use a tampon or a diva cup it will never fit I’m only able to get half a finger in there I’ve never had sex could that be the problem? when I try to use a tampon or diva cup it’s really uncomfortable I would try different positions to help fit it in. nothing seems to ever work what should I do? I would go to my mom about this but it’s kinda embarrassing for me for some reason I really need help with this please if you have any suggestions on ways to help. I wear pads but they are really irritating down there no matter the brand so that’s why I’m trying to use tampons.