Gypsy Rose Needs Quick Divorce From Ryan, Paternity Law Complicates Split

Gypsy Rose Blanchard‘s trying to move on from her estranged husband Ryan Anderson, but her pregnancy and a Louisiana law are complicating that, and prompting her to step on the gas when it comes to divorce.

While she happily announced this week she and ex-fiance Ken Urker are expecting, there’s a law in the Bayou State that adds another layer to the story. It says if the mother of a child is married to someone who isn’t the biological father when the child was conceived — or has been divorced for less than 300 days at the time of birth — then her ex, or estranged husband, is presumed to be the father.

So, in the eyes of Louisiana, Ryan’s name would go on the birth certificate as the daddy … even though Gypsy says Ken is the biological father.

Under the law, Ken would have to establish paternity through a DNA test.

Of course, Ryan and Gypsy haven’t finalized their divorce yet … and, the bun’s already in the oven — so even if GRB and RA got the divorce finalized today, they’d still need to go through the paternity test.

This isn’t difficult to do — all 3 parties (Gypsy, Ken and Ryan) just need to sign a document and Gypsy and Ken need to provide a paternity test proving he’s the father … and it’ll all be sorted out.

Sources close to Gypsy tell TMZ … Gypsy’s aware of the law and believes moving the divorce along will help matters, though she knows they’ll also have to perform a DNA test.

ICYMI … Gypsy and Ken announced the pregnancy earlier this week, posting photos with ultrasound pics of their soon-to-be newborn. According to her caption, she’s due in January.

We’re told she gave Anderson a heads-up before announcing the pregnancy news which came as a huge blow to him because she says he still had eyes on a possible reconciliation.