Small vaginal opening.

Christy
When I was quite a bit younger I was able to use a tampon. I did once and I felt it the whole time and I got sick. So I never did again. Its been like 20 years) Well my Dr talked me into trying to do a pap smear. And it hurt sooo bad. (Which I knew it was tight cause I play with myself but now its super tight). I had to go to a specialist to have it checked and she told me to get vaginal dialators. So my question is has anyone heard of the opening getting smaller and tighter with age? I'm a virgin but ive been thinking about haveing sex with my boyfriend and he's normal sized but I'm worried it will hurt too much.