I agree. Ask for a second opinion (by law you are entitled...). Ok, your concerns may be unfounded from a medical point of view but that does not mean they can be ignored in such a way.
Doctors are generally loath to do surgery (especially elective) because, frankly, it is expensive (for both you as the patient and them as a health centre), takes up resources which may be better spent elsewhere and (more importantly) is dangrous. They are also often loath to listen to patient opinions if they contradict their own. I think it is something they get from training...Another doctor may be more inclined to listen to your concerns and address them in a sensible manner.
In the meantime... have you considered alternative methods to making your sex life easier? More lubrication may help to ease the apparent friction problem you have so try some KY jelly or almond oil. You can also try to see if he can spend more time in foreplay (look up the techniques for the Yoni massage - it may help you get in the mood). He may already be spending a lot of time in foreplay (not saying he is lacking in that department) but if you are getting sore and no lubrication it may not be enough.
Finally, consider the position you are using. If he is battering your vagina walls then it is possible that you are not in the correct position. Try a few alternative positions and if he bashes again keep moving until you find one that works.