The Wales international has scored five goals in 13 appearances for the Blues this season, but missed Wales' 3-0 win against Scotland at the weekend with a groin problem.
And Bellamy, whose career has been dogged by persistent injuries reckons the end could be on the horizon.
Bellamy told Sky Sports: 'I know there are not four or five years ahead of me with the injuries I have had.
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Bellamy has enjoyed a successful start to this season and is relishing playing under fellow countryman Mark Hughes.
On target: Bellamy has scored five times for City this season
He said: 'Everything at Manchester City has gone well for me from start to finish.
'It is so professional here. The manager is clever - he doesn't wantto give any of the players reason to moan. He makes sure the only thingyou have to concentrate in is football.'
Hughes expects Gareth Barry to shrug off a groin problem he picked up on international duty to face Liverpool on Saturday.
The midfielder suffered some discomfort following England's defeat by Brazil in a friendly last week.
Hughes said: 'Gareth came back from the international with a littlebit of soreness but it should not be a problem for the weekend.'
It was Barry's fifth outing for England this season and Hughes intends to give the midfielder a rest at some stage.
'It is a long season and he is more than capable of dealing withthat but there are going to be times where we will have to protect him," Hughes told the club's website.
'We are mindful of the fact that Gareth has played so much for usand for England. We want to keep him fresh and well for key games."
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