Cheyanne - I'mm disappointed in You! Never mind, but you might like to try this.

Affter you've had a couple of orgasms, get into a doggy position with your knees well open and your head down. Ask him to fuck you gently with two, three and then four fingers held together to make a point. They won't go far into you or stretch very much - anyway you'll let him know what is needed. As an extra, he will be able to brush your rosebud with his thumb.

Doing it this way you can get just a full as you enjoy without worrying about "Oh my God, I'm doing something unnatural and it will hurt..."