Like I said before, you are stunning!
Maybe it is just pre-wedding jitters, only you can tell that. If he makes you feel bad regularly though, and if you are often upset by him then it isn't worth it. It will just be so much more effort in the long run.
You deserve to be with someone who makes you happy, who makes you laugh, makes you smile and who you can't wait to spend the rest of your life with. Think long and hard about why you are with this guy, and if it's not any of those, then it is probably best to leave while you can.
Or maybe tell him you are having doubts and postpone the wedding? I guess there is a chance he would leave after that, but that would just show he doesn't deserve you.. if he isn't willing to keep hold of you no matter what.
Only you know what's right, and whatever your decision we will all back you up and support you in that
Hope it all goes ok
xx