Tamar Braxton forced to exit 'Dancing With the Stars,' reveals she has blood clots in her lungs

R&B singer and "Dancing With the Stars" competitor Tamar Braxton revealed Wednesday that it was blood clots in her lungs that hospitalized her Monday and now have forced her to leave the show.

"With a Heavy heart I regret to inform you that my season of 'Dancing with the Stars' has to come to an end along with the rest of my tour dates with [R&B singer] Kem," the 38-year-old Braxton posted on Instagram, with a photo of herself back in a hospital bed and her "DWTS" partner Val Chmerkovskiy at her side.

Braxton had returned to the dance competition Monday night after her hospitalization -- which she initially believed to be for pneumonia -- and appeared in a group performance during the last 20 minutes of the show to avoid elimination. Then, she wrote, she "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," referring to a pulmonary embolism, a potentially life-threatening blockage in one of the pulmonary arteries in the lungs.

"As you all know," she continued, "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."

She thanked fans for their support and called Chmerkovskiy "beyond a friend, brother and the BEST partner EVER."

In September, reality TV star Kim Zolciak Biermann was eliminated from the show for medical reasons after suffering a transient ischemic attack, or mini stroke.