The Hungary international, who ruptured his anterior cruciate ligament in a 3-1 defeat at home to Tottenham at the end of November, opted for the safer option of surgery as opposed to having a synthetic ligament installed in his knee, which would have seen him return sooner.
And, whilst the 32-year-old is not ruling out the possibility of making a comeback this season, he is staying realistic about a return.
He said: “There is no need to rush and I will play when I am fit. Hopefully I can play at the end of the season.
"But if that is not the case, it's OK. I just need to make sure I'm ready for next season and that the knee will be perfect so I can start the season strongly.
"If I play before the end of this season, then that's a bonus."
Gera, who was re-signed from Fulham last summer, has made only three appearances for the Baggies this season and revealed he did not opt for the synthetic ligament in effort to prolong his career.
"If you have the synthetic ligament, you can come back quicker but it's too risky and my plan is not to play for one or two more years,” he said.
"If that had been the plan, the synthetic ligament would have been the better option. But I wanted a proper operation so I can play as long as I can. I still feel I can play for a long time."
How do you stay up to date with football when on the move? With http://m.goal.com – your best source for mobile coverage of the beautiful game.