Nineties folk star Jewel may not be dancing the jig on the new season of Dancing With The Stars after all.

In an entry on her blog Wednesday, the 34-year-old singer revealed that she has been diagnosed with tendonitis in both knees, and she may be forced to drop out of the eighth season of DWTS, debuting March 9.

Jewel and her husband, rodeo star Ty Murray, will be the first married couple to battle one another on the ABC ballroom series.

“I guess I really over did it on the rehearsal front!” she writes. “My knees have been hurting so badly that I finally broke down and talked to [husband Ty Murray's] knee doctor yesterday. He said I have tendonitis in my knees and that I have to start a course of medicine to try and bring the swelling down. Yuck! It’s mainly my left knee, and I can’t believe I hurt it so badly.”

“Now I’m just worried I won’t even be able to dance!” she says.