As well as Delaney's own goal, Town finished the game with 10 men as Grant Leadbitter was shown a straight red card for a high challenge on Paul Anderson.
"We lost to an own goal but we I wouldn't say we were unlucky. There are no pity parties," he said.
"A lot went on before the goal and we had possession of the ball. We should have done better. We would have been disappointed had it been 0-0 at half-time - let alone be 1-0 down.
"Forest are a big, strong team and they defended well. I didn't think we played badly, though, and there wasn't a lot in it.
"We showed endeavour, determination and commitment. Their goalkeeper made a great save from Troy Brown."
Source: PA
Source: PA