Elisabeth Hasselbeck

Elisabeth Hasselbeck

U.S. talk show host Elisabeth Hasselbeck is pregnant with her third child with American football star husband Tim Hasselbeck.

The View co-host announced she was expecting again on the morning chat show on Thursday, admitting she was stunned by the news herself.

The 31-year-old was feeling exhausted after months of reporting on the U.S. Presidential election, and suspected the heavy workload was to blame for her fatigue.

She said: "I'm pregnant again! I'm due in August... We were thoroughly happy with the surprise of it. I didn't even know for two months. I was walking around - I thought I had - I kept saying, ‘Electionitis, electionitis.'

"I was tired, I was nauseous, I thought I was worn out from the whole procedure. No. I was knocked up and didn’t realise it."

The couple already have a three-year-old daughter, Grace, and 14-month-old son, Taylor Thomas.