Should I tell my PS about my food poisoning?

Full disclosure is always the best policy. If you do not tell the surgeon everything then it becomes hard for the surgeon to make the right choices for you. So let the surgeon know, and likely it will not affect your procedure but let your surgeon make that decision with you.

Yes, your surgeon should know. Any bacterial infection adds to the risk of implant infection, which may sound trivial, but can lead to a cascade of reoperations.Breast augmentation should be done under safe and ideal conditions. Discuss your recovery with your surgeon. All the best.