Scary moment for Raheem Mostert -- the NFL running back's 3-year-old son was rushed to the hospital after suffering a high fever and other severe COVID-19 symptoms this week ... but thankfully, he's recovering back home.
The 49ers star's wife, Devon, shared the terrifying news on Wednesday ... posting a photo of their their son, Gunnar, in an ambulance.
"If you think COVID is a joke, this is our sweet G man in an ambulance today after I called 911 because he was lethargic, skin was gray, lips were purple, and had a 103.