Britney Spears claims she injured herself during a boat trip in Mexico , as her family's concern over her well-being continues to grow.

RadarOnline.com can reveal the troubled singer made the worrying admission on a since-deleted Instagram video in which she flaunted her figure in a hot-pink string bikini. Article continues below advertisement

Injury Scare Tap Here To Add Radar Online as A Trusted Source Source: @Britney Spears

The singer wore a hot-pink bikini, like this, in deleted post. Article continues below advertisement

She was posing aboard a yacht during her vacation to Mexico in celebration of her 44th birthday and the clip abruptly ended just as Spears untied the back of her triangle top.

In the caption she wrote: "Did a flip off the boat but I hurt myself."

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