Painful Sex

I am 16 years old. I’ve had three sexual partners, who I all used protection with. I knew I was emotionally and physically ready to have sex. However, all three guys have been different size, none over 6 1/2 inches though. Sex is absolutely painful for me, mostly always resulting in bleeding. How do I talk to my mother about this? I know this isn’t normal, but I feel it’s virtually impossible to tell my mother. She’s a strong Christian women who believes in sex after marriage, and she would be extremely upset to find out I have been having sex. Like, to shorten things, I just basically cannot tell my mother for at least until I’m 19. Is there any other way I can talk to her about this without telling her I’ve had sex? Please no hate comments. I’ve realized that I’m young, but I was ready and am safe as always.