Duff's pet sick as a dog

Pregnant star Hilary Duff spent last Sunday in a veterinarian's emergency room after her pet dog fell sick again.

The singer/actress took her beloved Chihuahua Lola to the vet after the pooch came down with an infection.

Duff, who is expecting her first child with husband Mike Comrie, took to her Twitter.com page to share her stressful situation with fans.

She 'Tweeted', "Didn't think I would be sitting at the emergency hospital at 2 in the am (morning) with Lola, poor girl has an eye infection! Lil dog can't catch a break."

The trip to the emergency room came just three months after Duff told fans she was having a "nervous breakdown" because Lola was suffering repeated seizures.