aNANImous Question

I am a young female getting married ending of janurary, and I am very anxious about the first night, my husband to be has not seen me in anything other than an abaya, and I am very self conscious about my figure and whether or not he would consider me too fat. I am naturally a shy person and he is very understanding alhamdullilah. Any advice regarding marriage, intimacy and the first night would be appreciated