Chris Coleman admits his career as Wales manager could be decided by their final two World Cup qualifying matches.
However, FA of Wales chief executive Jonathan Ford has said Coleman would not be judged "on just two games".
Wales face Macedonia in Cardiff on Friday night and Group A leaders Belgium in Brussels next Tuesday.
"I know there's added pressure, we've got to do this, we've got to do that, we've got to perform. My future's on the line," Coleman said.
Coleman, 43, who took over as Wales manager after the death of Gary Speed, has a contract until the end of November.
A new deal has been agreed in principle but remains unsigned by both parties, with Coleman saying earlier this month he is undecided whether he will sign it.
Wales have won just three of their 12 games under Coleman - their last victory was against Scotland in March - and sit bottom of their qualifying group.
A win over Macedonia at the Cardiff City Stadium would at least give Wales hope of not finishing bottom of Group A and hopefully gain them a slightly more favourable seeding when the qualifying draw for the 2016 European Championship is made.
"I said as soon as I walked in the job that I'd never, ever walk away from Wales during a campaign," Coleman added.
"We've got two games remaining, the next one is massive."
Wales are without 10 players because of injury, including captain Ashley Williams, while defender James Collins has been called up after settling his differences with Coleman.
"It's tough because we're missing a lot of players, we've got a lot of inexperienced players," said the Wales boss.
"On the other hand, I look at it and think it will be beneficial for Wales that these boys are getting a taste of international football.
"It'll be a bumpy ride against Macedonia. They've beaten us, they've beaten Serbia, they've drawn with Scotland at Hampden Park, they've lost narrowly to Belgium.
"They're not minnows any more, not like they used to be, and were seeded higher than us coming into this group.
"This'll be a real tough game on Friday night, but the boys we've got will get great experience and it's a game we've got to go out and try and win."