“Itchy rash after ba with silicone implants”

Seeking help:

I am 15 days post op from BA with silicone implants. 8 days post op I developed an itchy rash on both breasts. I saw my PS yesterday and he told be to stop wearing the surgical bra bc I may be allergic to the synthetic fiber and I did not have an infection. Today my rash has spread to other parts of my breasts. They are red, warm, and extremely itchy. The rashes are around the implants. I put topical anti-itch cream on the rashes. Could I be allergic to the silicone implants? I am allergic to silicone contact lenses. I feel my body is reacting negatively to them. How common are rashes? Please help!