Heidi Montag reportedly believes she could be pregnant despite announcing her split to hubbySpencer Prattlast week.
The Hills star, who is said to have filed for a legal separation from Pratt on Tuesday is allegedly 'terrified' she could be expecting her first child.
An insider told Star Magazine: "She and Spencer had an active sex life right up until the day she walked out door, and she was terrified that she could be pregnant."
They added: "This is the last thing she needs right now…"
Heidi's estranged hubby has reportedly expressed in the past that he does not want children under any circumstances.
As we weigh up the chances of there being a Speidi sprog, Montag's own father has revealed he isn't sure whether their spilt is genuine because he hasn't heard from his daughter.
The reality TV stars have been accused of faking the split for publicity after Pratt was seen visiting her at co-star Jennifer Bunney's home and also having contact with Heidi on Twitter - and now it seems, even Montag's father isn't sure whether to believe it.
Bill Montag told RadarOnline: "I have not been in touch with her vocally about any of this, so I don’t know what’s really going on."