Bought my 07 ninja 250 less than a month ago with 14k miles.

Today I decided to take the bike for the first time to Aubrey to get a better overall feel for the bike instead of my normal freeway driving. On my way back I noticed that tried to accelerate but there was no power (haha I know it's a 250) but it bogged and went no where. There is no speedometer on the bike right now but I was barely keeping up with normal traffic going approximately 50 mph. Here is power loss thought out the entire power band and it is more significant in the mid and high range. I'm thinking possibly the carbs? Has anyone else had his issue and what was the problem?