But Harewood is not put off by the criticism and insists he has the ability to turn the situation around.
He told the Daily Star: "When I came here I didn't expect to be treated like this but it's happened and I've got to deal with it. I've had a lot of criticism.
"People are entitled to their opinion but I try not to take much notice because it comes with the territory.
"I'm a professional, this is my job and I have to try and overcome it and change people's opinions about me.
"I knew there would be pressure on me and it hasn't been easy at times, but I still back myself.
"I have the ability to succeed here and that's what I intend to do. It's been hard at times and it's taken time to get going again."
Harewood's loan spell expires at the end of December and the striker says he would be happy to stay on.
He added: "If Chris Hughton wants me, I'd definitely want to stay.
"To be part of this group of lads has been fantastic and they have supported me through everything."
Coca Cola Ch'ship 09/10 Win Outright: Newcastle 15/8