If you are having another surgery or procedure within a month of a breast augmentation, you should contact your surgeon regarding prophylactic antibiotics to prevent capsular contracture. What this means is that bacteria could get into your bloodstream from your rhinoplasty (or a dental cleaning, colonoscopy, etc.) and potentially become attached to your "new" breast implants. This could lead to an inflammatory reaction where your body's immune system develops thick, hard scar tissue around the implants. Occasionally this could lead to clinically hard, tight feeling breast implants-which may be permanent.
Discuss with both your surgeons the timing and type of antibiotic which should be used around the time of your surgery.