Cryptic pregnancy:
According to the Cleveland Clinic, only 1 in 2,500 pregnancies go unnoticed until delivery, in what is called a “cryptic pregnancy,” though staff members at TriCities Hospital said cases like Johnson’s happen more often than one might think. [“She thought she had a kidney stone. It was a full-term baby girl.” Sydney Page, WaPo]
Cryptic? Not a great modifier to select. And it’s only a letter off from cryptid, which would really stink.
