Washington, April 22 : Amy Winehouse’s estranged husband Blake Fielder-Civil has demanded a paternity test from his alleged rehab lover following claims that she’s pregnant with his child.

Gilleen Morris recently said that she is expecting Fielder-Civil''s baby following a brief fling while they were being treated at the Phoenix Futures Rehab Centre in Sheffield, England in February (09).

Winehouse is reportedly devastated over the news - but she will have to wait for official confirmation, as Fielder-Civil is denying Morris'' allegation and demanding a DNA test to establish the truth.

"We need more information," Contactmusic quoted his mother, Georgette Civil, as saying.

Fielder-Civil filed for divorce from Winehouse in January (09) over allegations she had cheated on him during a sunshine break in St. Lucia. (ANI)