Her diagnosis comes after her boyfriend, Tiger Woods, recently returned from overseas treatment following his DUI charge

“I’ve recently been diagnosed with breast cancer. While this isn’t news anyone expects, I’m working closely with my medical team on a treatment plan,” Vanessa, 48, wrote.

She shared her gratitude to the doctors who performed a procedure on her “earlier this week.”

“I am staying focused and hopeful while surrounded by the love and support of my family, my kids, and those closest to me,” she wrote. Vanessa shares five children with her ex-husband Donald Trump Jr.: Kai, 19; Donald, 17; Tristan, 14; Spencer, 13; and Chloe, 11.

“Praying for your continued strength and a swift recovery. Love you mama.” Ivanka Trump, Don Jr.’s sister, comment on Vanessa’s post.

The news of the diagnosis comes after her boyfriend, Tiger Woods, completed a six-week treatment stint out of the country after his car crash and DUI charge. Woods was charged with DUI charge and a charge for refusal to submit to a urine test. He pleaded not guilty to both charges on March 31, according to documents obtained by PEOPLE on April 1.

The professional golfer, 50, returned to his home in Jupiter, Fla., on Wednesday, May 13.

“Tiger took his trip seriously and is all about continuing his recovery and putting this chapter behind him,” a source in Jupiter told PEOPLE on May 17.

“Vanessa and Tiger are in love, still serious, and happy to see each other,” the source told PEOPLE, adding that Vanessa “is eager to help him continue with his progress and move beyond any more public scandals — which they both dislike intensely.”