Lavigne, 30, shared a snapshot of herself waiting for doctor for check up, reported E! online.
"On my way to good health #TakingCareOfMyself #FuckLymeDisease," she wrote.
"This journey continues... Just reach up, don't give up until you've touch the sky... We were all meant to fly... #DrOfficePhotoShoot @Hurley @amusesociety," she captioned her picture.
The "Complicated" hitmaker was in high spirits while getting clicked.
She was sporting casual look and a pair of flip-flops that spelled out love.