Hi, I have had 4 BMBs, the first in August 2013 to confirm diagnosis, the second in March after RCD induction treatment, the third in August 100 days post-stem cell transplant and the last this month to confirm relapse. They were given at my local hospital under local anaesthetic, the first 3 were given by a specialist nurse with another nurse holding my hand and chatting to take my mind of it, and although uncomfortable were not painful, the last was given by a doctor and was very painful. I think it just depends how much practice they get, if it hurts don’t be afraid to say so and they will top up the anaesthetic.