Avril Lavigne is "on the way to good health".

Avril Lavigne

Avril Lavigne

The 30-year-old singer has been battling Lyme disease since last year but appeared in high spirits on Tuesday (22.09.15) as she shared an update with fans about her latest visit to her doctor.

Posting a picture of 13 vials of blood she had drawn during the appointment, she wrote on Instagram: "On my way to good health #TakingCareOfMyself #F**kLymeDisease."

Avril also uploaded a picture of herself sitting in the doctor's exam room and 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 (sic)."

It's been a tough time for Avril, who recently announced the end of her second marriage, to Nickleback frontman Chad Kroeger, 40.

In a statement on Instagram earlier this month, Avril, previously married to Sum 41's Deryck Whibley, 35, wrote: "It is with heavy hearts that Chad and I announce our separation today. Through not only the marriage, but the music as well, we've created many unforgettable moments. We are still, and forever will be, the best of friends, and will always care deeply for each other. To all our family, friends and fans, thank you sincerely for the support."

The former couple, got married in the South of France in July 2013.