1 Month post Botox: Whole face is swelling and red, I also have a fever... Could it be from botox?

Hi there. I'm sorry to hear that
you're not feeling well. Since it's been a month since your treatment, it's
unlikely that the symptoms you're experiencing are caused by BOTOX Cosmetic.
See your general practitioner as soon as you can to determine whether you're
suffering from an allergy, an infection, or something else. Good luck!

No, at this point in time, one month, what you are experiencing is unrelated to your Botox injections. It sounds like you might be having an allergic reaction to something, but in no way could Botox be in your system for a month before causing an issue like this. "This answer has been solicited without seeing this patient and
cannot be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."