If it freaks you out - don't do it! Anything else?
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You have to calm yourself down. There is no need to keep worrying about it. What made you think of this thought of anal sex? As the posts have said above test yourself with a toy and see how you like it. Don`t rush into anything you are not ready for. If you don`t want a cock in your ass then don`t. Anyone who you are with will have to respect that. Good luck.
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