Katie Price having 'difficult pregnancy'

Model Katie Price says she is going through a "difficult" pregnancy as certain things have gone "wrong".

The 35-year-old is already mother to 11-year-old son Harvey from her relationship with Dwight Yorke. She even has son Junior, seven, and daughter Princess Tiaamii, five, with ex-husband Peter Andre. And now she is expecting her fourth child this year with husband Kieran Hayler.

She admits she is complaining more this time, reports contactmusic.com.

"I have moaned a bit this pregnancy because there have been things wrong, but it doesn't mean to say you can't do anything. I'm not going into detail but it has been more difficult. But the next few months I'm really looking forward to. There's lots happening," Price said at the launch of her latest book "H"'s the One".

However, her woes aren't stopping her from work.

"I didn't know I was going to have a baby this year, but you still have to continue. Work is work. I'm pregnant, not ill," she added.