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Jamie Lynn Spears seems to be happy with her pregnancy and her engagement to babydaddy Casey Aldridge... but are her parents? Life & Style Weekly reports that behind the scenes, Jamie and Lynne are a tad more concerned.

Father Jamie in particular is "having a hard time pretending he can be happy about it all," says a family insider. "He watched Britney go through a messy divorce after rushing into marriage and having kids too young. It’s caused the family nothing but grief." Drama, drama, drama!

And what about Lynne? In Touch Weekly says Jamie Lynn's mom wants Casey to sign a prenup. "He doesn't seem as committed to the relationship as Jamie Lynn," says a confidant. And because the fam is aware of the rumors Casey's cheated on Jamie Lynn, "Lynne is keeping an eye on him."