Pregnant at your wedding

Hi everyone. My fiancé and I are getting married on October 13, 2017. Right now I am 5 days late and have been feeling very nauseous the last 3 days in a row. I took 2 tests and only one came back with an extremely faint line. Don't you worry, I'm going to take more tests to be positive. While I would love to have a baby with him (I have a 5 yr old daughter from a previous relationship) I am TERRIFIED of being pregnant at my wedding! I feel like I won't get to enjoy everything that goes along with the wedding if I can't drink at my bachelorette party, I will be feeling sick and tired the day of the wedding, and HOPEFULLY they'll be able to alternate my dress! Did anyone else go through this?! Ughhhhhh.