"One of their players elbows went into my hip and it was a bit painful but nothing to worry about," Dunn told the Blues official website, www.bcfc.com.
"There was no point in me trying to continue because it would only stiffen up, so I came off.
"I thought it was going to be sore this morning but it feels a lot better.
"I should hopefully be fit for Saturday and I am looking forward to playing in front of the home crowd for the first time."