and then there were 3

Well, there are only 13 days until my wedding and now I'm down to three bridesmaids. One got pregnant, and now another has to drop out for health reasons. I swear...I should have known something like this would happen. It's not a wedding unless something bad happens. So now I have extra groomsmen, spent money on dresses that won't be worn, and have to figure out what to do...but what can be done at this point?