Congrats on your upcoming wedding. My advice would be to see if you can see your doc right away (a GI preferably)... sometimes the waiting time for an appt is long, tell them your situation and see if they can squeeze you in. There are long term solutions for constipation (for me its Miralax) but they can take a while to start working. Five weeks should be enough time to get a regimen going and get somewhat normalcy so the sooner the better. If you can't, maybe you can start your own fiber and/or Miralax regimen yourself. Start off slow however.
You precious girl! Congratulations on your marriage! I hope you can relax enough to enjoy your wedding night!
Great advice given above. I might also suggest that you ask your doc for a small prescription for an anti-anxiety drug. Assuming you have no addiction problems, you should really find this beneficial. I know it was one of the few things that I found helpful. It will help relax you so that you won't be so focused and preoccupied with your tummy. That alone will help your colon relax enough to do it's job.
Like the above poster said, you should try the Miralax as soon as possible. Get yourself squared away now so you can enjoy the next few weeks leading up to your big day! Good luck!