Jessie J revealed she is ‘starting back up’ as she put on a mini concert amid her health issues.The Bang Bang singer, 33, announced that she had been diagnosed with Ménière’s disease last year, with the condition impacting the ear.She recently opened up about the illness, explaining that she is in pain every day over the symptoms.After taking a brief social media break, the star returned to Instagram with an incredible video as she belted out songs in her living room.Beside the clip, in which she performed Defying Gravity, she penned: ‘Defying Gravity with no makeup on swollen (allergies) eyes in house clothes putting on a mini concert (one song sung twice) after not singing for over a month with a sassy about of reverb to an audience of.