Gerken sustained a groin injury in the warm-up to the game at Blackpool on November 1 which saw Bartosz Bialkowski take over as first-choice.
After featuring in the FA Cup draw at Southampton on January 4, Gerken’s hopes of playing in the replay were ended by a further injury.
He made his first-team league return in the 1-1 draw at home to Brentford on March 7 but was then concussed just 10 minutes into the 4-1 loss at Middlesbrough a week later.
Now he is being forced to play back-up to Bialkowski once again as Ipswich attempt to secure a play-off place with just five games remaining.
Gerken told the club’s official website: “It’s one thing to get your head around another keeper getting picked to play in front of you but it’s a whole new ball game losing your place through injury.
“It first happened when we played at Blackpool when I pulled up in the warm-up with a groin injury. Then I got injured again when I was going to play against Southampton in a big FA Cup game which was live on TV.
“I have never had a season like this and it has been tough. It’s been experiences that I have not had to deal with before.”