Am I being too insecure in my relationship?

Yes, you are being too insecure (understandably). Having a past like yours effects every aspect of your life. My advice is to read about it so you can learn how to cope with yourself. Love yourself for who you are! Not for how good you are in others eyes. I think your soon-to-be-husband is reacting normally, but he also may be feeling like all you want from him is his body. Try to be realistic and understand that when he says "No" that is just what he is feeling at the moment. It isn't anything wrong with you, but with him. It isn't fair to him that he act like he wants something that he doesn't. The LAST thing you should want is a man in bed that doesn't want to be there! I also suggest a compromise. If he doesn't want and you do.... then be willing to just have him hold you. You also might want to find out what his love language is. Obviously, yours is touch, but what about his? You can read about it by following the link below. If you both are showing your love through each others language, the relationship can't help but succeed! Lord bless you both and if you need to email me then feel free to! :)