Trewick said: "I don't know what happened with our disallowed goal. It looked legitimate to me.
"We've got one point, but to be honest I think we should have had all three. I thought we dominated the game for long periods. All we needed was to finish them off, but on the day we couldn't do it.
"I was delighted with the performance. We've looked at the way we have approached away games and this looked like an ideal game to use our new plans and it proved that way."