Deavan Clegg, the star of 90 Day Fiancé has revealed that she is enduring “every parent’s absolute worst nightmare” after her three-year-old son was diagnosed with leukaemia.The 25 year old, who is currently pregnant with her third child, revealed the news that her little boy Taeyang, who she shares with ex-husband Jihoon Lee, is fighting b-cell acute lymphoblastic leukaemia, a childhood cancer. Sharing the heartbreaking news on Instagram with a series of pictures in which little Taeyang could be seen in his hospital bed, Deavan wrote: “I have vowed to always be 100% transparent with you guys and I am choosing to share the most vulnerable and saddest point of my life right now in hopes it can help give anyone else dealing with a similar situation some strength.” “I’m overcome with so much emotion and devastation to announce that my beloved son Taeyang who just celebrated his third birthday last week was just diagnosed with childhood cancer, b-cell acute lymphoblastic leukaemia just a few days ago.