I have a fear of having my cervix hit during sex?!

stop thinking so much when you're having sex. your body knows what to do, and you'll become fully aroused (and retracted) if you enjoy it and shut your brain off, and just let it feel good. sounds like you're thinking too much to me, but idk. try more foreplay if you need reassurance that you're big enough...even if he does reach your cervix, it doesn't do anything...he can't go past that, and you can let him know if it's too deep, and him going slower and making you feel good will help you open up more. don't think about it so much though, that'll help the most :-) good luck

~married woman, personal experience~

Your cervex will be fine. It's very strong so you're good.