Both the quilt block and the dress are beautiful. I sure hope you will be completely well very soon. It's awful to be sick when you have a special occasion approaching.
I don't think you need to change your block, but if it bothers you, why not? It's only one piece and not quilted yet. Maybe just put it aside until you feel better, though! I know I make more booboos and get more frustrated if I'm not feeling up to par.
Be well, and enjoy the wedding!