Avril Lavigne has revealed she is having some "health issues", but didn't give further details.
The Sk8er Boi singer - who is married to Nickelback frontman Chad Kroeger - hasn't been seen out in recent weeks and she has now explained to a fan that she has been unwell.
Avril, 30, apparently opened up in a private message to @AvrilMusicChart on Twitter, saying: "I feel bad because I haven't been able to say anything to the fans to let them no why I've been absent. I'm torn as I'm quite private.
"I'm not feeling well. I'm having some health issues. So please keep me in your prayers."
The fan later posted a message which read "#GetWellSoonAvril" and "#PrayForAvril", and the singer replied to say "Thank you", but didn't elaborate.
The exchange had led to speculation that It's Complicated singer Avril might be pregnant, but h er representative later told Billboard that she is not expecting.
The spokesman also confirmed the authenticity of Avril's conversation with the fan.