"I see the media is working overtime speculating where I am & what I'm doing", Melania tweeted.
The off-tone tweet caused some Twitter users to worry about the first lady's welfare and demand answers to why she hasn't been seen in weeks. She was notably absent from the Memorial Day wreath-laying at Arlington Cemetery earlier this week.
On Wednesday, as Trump tweeted the reassurance about her health and whereabouts, the White House was hosting a sports and fitness day, with Olympic and pro athletes and public-health officials gathered to stress the importance of physical activity. "Our office has received thousands of calls and emails wishing Mrs. Trump well, and we thank everyone who has taken the time to reach out".
Some have also put forth conspiracy theories about how the first lady is and why she's not been seen, such as that she's moved back to New York City.
Even her spokesperson Stephanie Grisham, known for posting updates and keeping tabs on the whereabouts of the First Lady has been scarce of realtime Melania news.
Melania Trump blasted media outlets Wednesday for drumming up conspiracy theories behind her almost three weeks out of the public eye.
England vs Pakistan - Highlights & Stats
He and Haris Sohail (39 not out) shared an unbroken second-wicket partnership of 54 to see Pakistan to their target. Amir also took the final wicket, removing the off stump of overnight batsman Dom Bess for 57.
Trump's lack of public appearances has sparked concern and generated conspiracy theories.
Some have also put forth conspiracy theories about the first lady's health and why she's not been seen, including that she's moved back to NY.
Her husband isn't helping squash any of the confusion.
Melania Trump at the White House for an event in the Rose Garden on May 7. "Just looking at us, right there", the president said at the time. She revealed: "I wouldn't characterise this as a long absence". Did she finally leave her husband, Donald Trump?
The president later announced on Twitter that his wife was in "good spirits" and he would soon be visiting her in the hospital.