Lions boss Lomas admitted: "The first goal was a mistake from our point of view. It was a really poor, soft goal, pretty much out of nothing.
"Once you concede one, especially away from home, you have to keep going and keep it at one-nil for as long as possible.
"But we didn't give ourselves a chance to get back in the game. The second goal was a needless free-kick out wide and a free header inside our box."
Trying to remain positive at the task ahead, Lomas added: "It is not the end of the world, but we are disappointed. We knew Ipswich were going to come out of the traps, at home on Sir Bobby Robson Day and after two defeats.
"Our target was to at least get to half-time with a clean sheet, which we did. We started the second half on the front foot with a couple of chances - Chaps (Richard Chaplow) at the front post and maybe James Henry had a shout for a penalty.
"But once it goes to 2-0, the game is normally dead and buried."