tara, it is probably a good idea to get seen by a doctor.. i dont no much about fissures or weather they heal on there own or need treatment but you want to be ok for your wedding right? so maybe it would be a good idea to visit the doc.. i understand that you dont like the idea of surgery, but that may or may not be nessarsary, you wont no unless you get checked out
congratulations on your upcomming wedding! take care.