I Took My Wife In To The Emergency Last Tues.

I took my wife in to the emergency last Tues. Because complaints of pain in her chest from breathing. She got hooked up to ekg, everything was normal. Doctor said she has a chest infection said he was going to prescribe her amoxacilin. Well , she was released same day. Went to pic up meds, no antibiotics just meds for heart burn. She has gotten any better. Now she's running a fever. I've looked online w/her symptoms. Possibility of walking pneumonia?