 [ Symptoms ] regarding an ultrasound what is the 0 day the date that the egg was released or fertilized by the sperm  i have received two different due dates during the earlier part of my pregnancy per the ovluation calendar my last menstrual cycle was 32days from the previous cycle first i was told i was x amount of weeks and 0 days and i was told i was x amount of weeks and 4 days i am trying to figure out on what day i possibly conceived [ Disease ] hi sarcoidosis can cause formation of lumps or granulomas or it can involve the lymph nodes if she has any symptoms like pain then painkillers  can help but should be taken only under consent with her doctor as she already has renal failure also a biopsy can be do e if further confirmation is needed can you also tell that these bumps appeared suddenly or gradually are they painful please revert back regards