The Tractor Boys threw away a two-goal lead at Portman Road as Huddersfield fought back to claim a point.
Ipswich have now failed to win any of their last five games, but McCarthy is hopeful that his players can recover quickly and get their promotion bid back on track.
"We were maybe fortunate to come away with a point. It was very disappointing," he told BBC Sport. "Frustrations were running high after the game but this is the same squad of players who cost nothing and were in the top six.
"Everyone enjoyed that but now we are having a little bit of a tough period. We need everyone to get behind us. I was very angry in the dressing room but I will look at it again on Monday and then move on."
Ipswich are back in Championship action next Saturday when they travel to struggling Blackpool.