The animal, called Victoria, mated with a male bear at the Highland Wildlife Park at Kincraig, near Aviemore, earlier this year.
To protect her from being disturbed if she is pregnant, the Royal Zoological Society of Scotland (RZSS) has decided to take her “off show”.
If she does raise a cub or cubs, they would be born in December or January, although senior figures at RZSS have said it is not possible to say at this stage if Victoria is pregnant.
Polar bear cubs were last born in the UK nearly 25 years ago.
Victoria was brought to Scotland from Aalborg Zoo in Denmark last year and is kept in an enclosure about a mile away from the park’s two males, Arktos and Walker.