Sister in laws bachelorette

Mary
I'm only 14 weeks pregnant but I reeeeally do not want to go to my sister in laws bachelorette party this coming weekend. It's a girls trip starting from Friday to Sunday. I'm going to hanging out with a bunch of drunk girls that I don't even know in overcrowded and hot clubs. I'm not looking forward to it but I don't want to be a Debbie downer. I'm too nice to say no I can't go, because I can go I just really don't want to. I can already see it: me pretending to have a good time, sleepy, tired, hungry, hot, nauses, babysitting everyone and their purses. 
Just wanted to let that out. Thanks for listening.