I am getting married this year as well (amazingly - I also have a very supportive partner!) and for me I am so glad that I had the Mirena removed so that I can actually enjoy it. In fact, I don't think that I would have had the energy to organise anything with it still there. It has been just over a week for me now and I literally feel like a new woman. My advice would be to listen to your body and put your health and wellbeing above everything else. I really wish you all the best and good luck!