Supermodel Rachel Hunter was rushed to a London hospital on Sunday after doubling up with stomach pains.
Rod Stewart's ex-wife was reportedly admitted to the emergency ward of St Mary's Hospital in Paddington after being struck by crippling pain.
After a series of tests, the 35-year-old New Zealander was discharged and is currently awaiting the results.
Hunter is temporarily staying in the UK to film a Christmas special of BBC talent contest Strictly come dancing.
A source says: "She was in extreme pain. She is on very strong painkillers and is concerned about what the problem is. She has vowed to carry on with rehearsals - she's determined not to let anyone down."