I'm having flu-like symptoms 5 days post-op from a breast augmentation. Is this a cause for concern? (photo)

I had my breast augmentation on Monday morning, now it's Friday evening. (Saline 380cc submuscular) Since Wednesday, I noticed slight discomfort when breathing deeply and my lungs and diaphragm feel irritated, but NO shortness of breath or pain. I feel like I am coming down with the flu, temperature is 99.1 with ibuprofen in my system. I have NO rash, red streaks, or unusual warmth on my breasts. Should I be concerned? What symptoms are cause for concern post-op? Thank you for your time.