The reported pregnancy was revealed on French news website 20 minutes.
Reporter Allain Jules said he received the information from a source at the American Hospital in the Paris suburb of Neuilly, where Miss Bruni went last week for a scan.
She was later in the day seen shopping and looking quite well.
Reports of their marital problems followed and their divorce was announced on October 18, 2007.
Nicolas Sarkozy's fiancee Carla Bruni is pregnant, it was claimed yesterday.
The former supermodel - who has been dating the French president for less than two months - has had the pregnancy confirmed by doctors in Paris, it was reported.
On November 2004 he was elected to the head of his party (UMP) From 1993-1995 he was the Budget minister; concurrently from 1994-1995 he was the Minster of Communication and.
"They have had a whirlwind romance and have been almost inseparable ever since meeting." The news, which has startled France, has been widely reported on radio stations and other websites across the country.
Well, it's quite simple, actually — they met at party in April 2012.
Mary-Kate — who was 25 at the time — had reportedly been complaining "about boys not being mature enough for her," and after just one month of dating, the two were "head over heels" for each other.
Sarkozy is the son of a French mother and Hungarian father who had emigrated to France during the Russian invasion of his homeland in 1944. He served as mayor of Neuilly, an affluent Paris suburb, from 1983 to 2002.
Since being elected deputy in 1988, he has held various positions in the government. Under Jacque Chirac he was named Minister of State, the economie and finances on April 1 2004.