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A romantic ride turned scary for The Bachelorette's Ali Fedotowsky on Sunday, when her kayak flipped over and she ended up in the hospital.

"Ali and Roberto had a little mishap when their kayak capsized this weekend," her rep tells PEOPLE. "Ali was taken to the hospital and had five staples put in her head."

The reality star, who is planning a wedding to The Bachelorette winner Roberto Martinez, Tweeted Sunday that she was going kayaking in La Jolla, Calif.

"Made it out of the ER w/staples in my head & a little less hair after falling out of a kayak. Scary stuff. Wearing a helmet next time," she wrote on Twitter. "I think I freaked out more when the doctor cut my hair rather than when he put staples into my head. Lol. Very thankful to be ok."

She's also likely very thankful to have had her fiancé with her at the time. "Roberto was fantastic," her rep says. "He kept her calm and took great care of her. She is doing fine, and actually off to work this morning."

Fedotowsky also posted a message of appreciation on Monday. "Thanks so much everyone for your concern," she Tweeted. "Big headache, but managed to hide staples w/hair part and I am back at work this morning."