Adenoid Cystic Carcinoma

Hi, Is There somebody who suffer/ed, from ACC  of salivary gland. Can you please tell me, how long it take to be diagnosed With this rare type of cancer, and when it was diagnosed if you had have any distant metastasis already there, without any symptoms. Thanks I have to wait long time for biopsy, cause I am pregnant at the moment. And I just want to be sure, waiting till March wouldn't be such a great mistake. Thank you.