Engine sounds sick=(! help

[Jenn103]

Hi guys, I am new to this forum. I own a 07 yaris (sedan). I havent had too many issues before this...but i need your help now.
When I drive, my engine sounds like its revving way higher than it is. My boyfriend says its more like a vibrating sound that gets higher as the speed gets higher. He says it doesnt matter what gear its in. He also says the sound ..sounds like its coming from the front wheel area. Its kind of scary, I feel like the engine will blow any second as I do alot of highway driving to and from work. When I go up to 120, the car sounds soooo loud its crazy. to me, it doesnt sound that bad when I am in residential and going like...40. but anything after that it starts going all crazy. Sorry im not good at explaining sounds or mechanical problems but if it sounds like something any of you have experienced advice would be super helpful!
Thanks, Jenny =)