Appears and sounds like a small incision opening and seroma fluid from the extensive surgery. Yes, antibiotics are a starring point. If no improvement in 1 week than re exploration might be the next option...
Thank you for your picture. You have a open wound. This may have exposure of the implant. Can't really tell from the picture. Sounds like you do have a seroma that is draining. Your incision is red and having an antibiotic is good but you need to have close follow up with your plastic surgeon.
Earl Stephenson Jr M.D. DDS FACS
From your photos, it looks like you have either an infection at the skin or a seroma (fluid collection) within the breast pocket. It is something that should be seen sooner rather than later as the implant may be exposed through that hole in the incision. This could lead to an infection with the implant and need for the implant to be removed.
Continue to follow up with your surgeon to ensure that you progress as planned.
Best of luck,
Vincent Marin, MD
San Diego Plastic Surgeon