With proper treatment (anti-biotics and bed rest), pneumonia usually takes about a week to get over to the point where you can be functional. My mother was over hers in about 4-5 days and she's 80 years old. I predict a week of bed rest.
Reminds me of this incident
https://en.wikipedia.org/wiki/George_H._W._Bush_vomiting_incident
Ideally Hillary will do just fine, but people just brushing off the seriousness of pneumonia is dangerous from a health perspective. I would ponder that if Hillary knew she had Pneumonia, she should have take the time off then and not waited till she passed out TV.