Looking back at Tuesday night, he says:
"It was brilliant, getting off to a winning start at home with a decent performance against a team that is hard to break down - I enjoyed it.
"Maybe if we had scored early in the first half it would have been a different game, but, when the clock ticks away without you scoring, it changes.
"When we did get one we settled down and they threw men forward late on; we got three points so everyone is pleased.
"The lads say that if things aren't going well the fans here let you know but I thought on the night they were fantastic."
Although a challenge by Calum led to Richie Barker being stretchered off, and Rotherham boss Ronnie Moore wasn't happy with the tackle, the reaction - or rather non-reaction - of the Rotherham players, none of whom complained, tells its own story.
"It was one of those where I was stretching a bit for it and to be honest I probably got a slight touch on the ball because the ref gave a corner," he explains.
"I went to see him after the game and he was walking around so I knew he was all right; I was genuinely going for the ball.
"I don't think I am a dirty player or anything like that; it was just a committed challenge and sometimes you catch them, which I obviously did on that occasion.
"I hadn't heard any comments but as I say I popped my head round after the game and knew the player was okay."
As for Ipswich, Calum adds:
"I think they are a good attacking side that like to pass and move the ball, as do we, so I hope it will be an entertaining one - and we come out on top.
"We looked solid enough and if we can carry that on tomorrow with a clean sheet that would be nice - and get a couple of goals."