It's been quite a while since you had your surgery and because it's a rash on the surface of your skin, it may not be related to your implants. The best thing to do would be to see your family doctor first.
The level of discomfort without pain is exactly what your experience should be after augmentation surgery. The surgical techniques have improved so much over the years that most of us strive to have our patients return to most daily activities in a day or two. Advil should suffice in...