The season 1 "Bachelor" runner up and season 1 "Bachelorette" says that she suffered a seizure.
(Click photo above to see her emotional post)
Trista doesn't yet seem to know the reason behind the seizure, but described on her Instagram account her harrowing ordeal.
She thanked her family and of course the love of her life Ryan, whom she met and fell in love with on "The Bachelorette." The couple have a son and daughter.
She also thanked the other tourists and Croatians who "held my hand, wiped my tears, and hugged my kids. You will forever be remembered."
Let's hope that the medical professionals can get to the bottom of why it happened.
Trista received an outpouring of support from her fans with more than 1,400 well wishes and 12.6k likes on her post.