"Dancing with the Stars" season 21 celebrity Tamar Braxton was forced to drop out of the competition because of a serious health concern that include blood clots in her lungs.

The singer went on Instagram to announce her unfortunate exit from the competition, posting a photo of her lying in a hospital bed with her pro partner Val Chmerkovskiy.

"With a heavy heart I regret to inform you that my season of #dwts has to come to an end along with the rest of my tour dates with @musicbykem," she wrote on the caption of the social media post. "After yesterday's final #dwts performance I went back to the hospital (after the doctors didn't want me to leave in the first place) only to find out that I don't have pneumonia but something way more serious and that is having several P.E.'s (blood clots in both sides of my lungs)."

She continued, "As you all know I will be the first to always encourage anyone to push through any obstacle that comes along one's way. But in this case, my health is my current obstacle. And in TRUE #tamartian form I must go about this the exact same way as I would anything else. I woke up to a mirror and saw myself this morning and that makes me the winner because that almost wasn't the case. Take care of yourselves... I love you and thank you ALL for your support. p.s. Big hugs and kisses to my boo @iamvalc for being beyond a friend, brother and the BEST partner EVER."

In a statement via ET Online, "Dancing with the Stars" confirmed that the 38-year-old singer and host will be out of the reality competition to address her health problems.

"We can confirm that Tamar Braxton asked to withdraw from the competition due to medical issues," the statement said. "Our pro and celebrity dancers' health is paramount. We wish her all the best and hope she recovers quickly."

Braxton was hospitalized during the Monday show's rehearsals for a medical condition that was initially thought as pneumonia. She nearly missed the show but made it in time for the second performance alongside Chmerkovskiy, Nick Carter and Sharna Burgess, avoiding elimination.

Braxton's unexpected exit could turn the fortune of the last eliminated "Dancing with the Stars" contestant. According to a report from People, a source revealed that producers are considering bringing back Alexa PenaVega to fill Braxton's vacated spot on the show.