Leaving your 2 month old

Christine
I cant even handle the thought of leaving my sweet girl for two whole days. My sister is having her bachlerette party in sf for two days and that requires me to leave my little one overnight:( im made of honor and feel obligated to go, even though i dont want to. I also have a low milk supply and im worried its going to be affected while im gone since i wont be feeding as often. Any advice? Should i still go?