Solution to small wound opening and smelly dark drainage in JP drain?

I had a thigh lift, arm lift and butt lift 8 days ago. I have 2 drains in bikini area that are draining an awful smelling purple fluid. I also have a small wound opening. My PS called in antibiotics last night. Can antibiotics really turn this around? I'm petrified to move and make it worse and the smell of the fluid is nauseating me. I'm keeping the wound extra clean. Nothing has changed since starting the antibiotics last night but will it get better keeping these drains in with antibiotics ?