You are confusing "vesting shares" (measured in "vests"/"megavests") with HivePower (HP). They're related, and one can be calculated from the other, just as 'meters' and 'centimeters' can be converted to the other.
As @nickyhavey said in his comment, a little over 5,000 HP makes you a Dolphin. You'll soon get your badge from @hivebuzz, and it could happen any time now! CONGRATS on reaching Dolphinhood! 🐬