Dancing With The Stars professional Cheryl Burke has revealed that she is still struggling with fatigue and "brain fog" after being diagnosed with COVID-19.MORE: Two contestants go home in shocking Dancing with the Stars eliminationThe ballroom dancer told HELLO! it has been a struggle to rehearse the fast numbers - including last week's jive and this week's coming quickstep - due to the effects of the virus.WATCH: Dancing With The Stars: Cody Rigsby dances the jive"When people say they are