Fabianski came in for plenty of criticism after Andy Carroll's goal doomed the Gunners to a shock weekend defeat at the Emirates Stadium.
Fabianski said: "To be honest, I have played for some time and have not been looking bad in goal.
"I was not happy with what happened against Newcastle but overall I have still felt in good shape.
"I was not thinking about 'bouncing back from Newcastle' and was only focused on having a good game here and helping the team.
"I think I'm getting experience which is really important for a keeper and that experience is helping me to prepare for another game.
"I don't know what will happen when Manuel (Almunia) is fit but I will keep doing my best and helping the team and we will see what happens."