getting married after baby's born

So I've been planning our wedding for over a year, we decided to get married on April 23rd,2017. We found out this summer that we're expecting, due April 6th. This pregnancy has been super hard on me ( I've been fainting at work, now diagnosed with anemia). Anyways, there is some talk about a c-section, I want the most natural birth possible. My dress is tight fitting and fit me absolutely perfect when it was purchased in march (a month after I had my daughter, they will be 14 mos apart). So can I go through with the wedding with my dress? What if I have a c-section? I would love some advice on this! I would absolutely love if any ladies on here have been through something similar as well!