With the bottom of the Championship tighter than ever, this was a result that left nerves jangling with Ipswich closer to the drop zone in 17th, three points ahead of third bottom Huddersfield.
Millwall are a point ahead of them and lie 14th, although they have two games in hand of some of the teams around them after a match that never caught fire.
McCarthy said: "It's a good point, without a doubt, and we've gained four points over Easter from our home game on Saturday and a point here.
"It wasn't a good game - it was pretty poor with two teams in a relegation scrap, where we've been all season long and I think it's probably dawning on Millwall as well now.
"They're one point better off than us and the other teams around us have won so it's nervy.
"The conditions weren't great - it was blowing a gale and it was a bouncy old pitch so it wasn't conducive to a great game of football.
"And yet there were quite a lot of chances and both teams could have won it, but I'll take a point all day long.
"Easter hasn't made or broken us - if anything it's made us a bit worse off despite getting four points because the league's bonkers, just crazy."