You may be two weeks overdue and not be in any mood to be a BM! Or you could be in hospital while the wedding is on. I was supposed to be in a bridal party one week before my DS was due, I pulled out of the wedding, it actually wasn't an option once I was pregnant as my friend didn't want the hassle of worrying about me as well as her big day.

DS came two weeks early. My husband was the best man, it was my friend marrying his brother!! and we had to leave the hospital one day early (as I wanted my husband to come home with us and the day after was the wedding day) and I ended up going to the ceremony only as it was around the corner from home. It was utterly exhausting just doing that and I would recommend not to go in it. Newborns need to feed every hour or two, maybe three and they don't give much warning. Just a giant scream! Good luck with whatever you decide.