The candidate had taken three days off after nearly collapsing at the 9/11 memorial on Sunday.
Clinton was later diagnosed with mild, non-contagious bacterial pneumonia.
Lisa Bardack, Clinton’s personal doctor, said she evaluated the former Secretary of State four times this month — including Wednesday, CNN reported.
Bardack added that Clinton “was recovering well with antibiotics” which she was told to take for 10 days.
“My overall impression is that Clinton has remained healthy and has not developed new medical conditions this year other than a sinus and ear infection and her recently diagnosed pneumonia,” Bardack wrote in a letter released to the media.
The doctor also said that Clinton was “up to date” on her vaccinations and has normal mammogram and breast ultrasound.
Clinton’s blood pressure was 100/70 and she has a heart rate of 70, according to Bardack.
While on the campaign trail, though, Clinton has dealt with a nagging cough. She suffered a two-minute coughing fit during an event in Cleveland last week, which she blamed on allergies.
However, there were speculations on social media that Clinton uses a body double to hide her health conditions, USA Today reported.
The only “evidence” of this theory were photographs from the memorial ceremony on Sunday with some saying the differences lay in the details: cheekbones, smooth versus wrinkled skin and body composition.
Others said it was strange that Clinton was not surrounded by security for part of the day. She even took her time walking along a sidewalk, telling spectators she was feeling “great” and stopped to pose for a photo with a young girl.