Acne or rash after laparoscopic appendectomy. (photos)

I had my appendix removed 3 days ago. I'm not taking any other medicine aside from Motrin and have done nothing new to my routine. I woke up this morning with what looks like a pimple rash all over my face and neck... Can anyone please tell me what this is please? I rarely ever have acne and can't figure out what it is or if this correlates with my recent surgery. Any advise will be much appreciated.

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