Mick McCarthy said Town face two massive games after the international break with Blues five points above the drop zone.
Birmingham and Wigan visit Portman Road within the space of four days at the start of April, with Town dropping to 17th after a 3-1 defeat at Cardiff.
“We didn’t start well in the game and gave too many free-kicks away and then we got a goal in front,” reflected the Town boss as Blues’ eight match unbeaten run was ended despite Luke Chambers’ opening goal.
“We never looked secure. The goal came from another free-kick. They will never score an easier goal.
“It was ridiculous the free-kicks that we gave away. We spoke about it beforehand but we just invited problems.
“They played well and we didn't. The goals we conceded were really bad goals. They were making us defend and eventually we have capitulated.
“I have said before that I’ve been concerned about what’s behind us in the table and we are in a relegation scrap now. You can slip into that bottom three if you are not careful and it’s a nervy time for a few clubs down there and we are one of them.
“We have two massive games coming up now, against Birmingham and Wigan. I can’t stress the importance of them enough. We need the crowd behind us and make it a hostile environment. It needs to be. We’ve got to stick together and we certainly need to play better than we did today.”
Subscribers to Ipswich Player HD can watch the full interview with Mick now.