baby shower problems

My baby shower is in 2 days, my sisters and two cousins (who flew from another state) are supposed to do everything. Nothing is done. Its Thursday afternoon and they are going shopping for clothes and im staying home because someone needs finish all of the work. They had weeks to go shopping but they delayed everything. The shower is Saturday and i have no one to help me. I told my sister its her responsibility she took on plus she already has an outfit for the shower why is she going but she insisted she has to go too. Im so tired. We are on a budget and she didn't even order any baby shower signs or cupcake decor so here i am making everything by hand. I want to have a nice party, we have about 60 guests coming. The location of the shower needs to be cleaned and decorated which i cant do due to my backpain (36wks). Im sad. No one cares.