I'm stage 3 and have now had 10 out of 26 bi-weekly infusions of Nivo. I have had a few side effects: constipation, pruritus and hypothyroid. My last CT scan showed up lung nodules and enlarged lymph nodes in my chest. I've been referred to a Respiratory consultant who wants to do an Endobronchial Ultrasound to determine if the enlarged lymph nodes are inflammation caused by the treatment or melanoma. I'm booked in for Tuesday and am pretty scared. The biggest fear is that the treatment isn't working. Has anybody had one? What was it like? How was your recovery?