Hi Maz, I had 3 radioactive injections to track my sentinel nodes - a couple around the nipple area and one directly into the cancer. I was pretty anxious but it was just a tiny, quick sting. I had to wait and massage for an hour before being taken for the x-ray on the morning of surgery (this was at Pindara). They stressed to me that it doesn't matter how many lymph nodes are highlighted by the dye - it isn't a reflection whether cancer is present or not. Glad they told me as I was covered in crosses when finished. They were done with a permanent marker and I had them on me for weeks!
The surgeon also injected me with blue dye during surgery as this turns the sentinel nodes & guards blue which makes them easy to identify and remove. 11 weeks on and my breast still has 3 lovely blue 20c sized marks. I've heard it can take months for these to fade.
Hope you get some dates booked in soon Maz, it will make it so much easier for you once you have a plan in place.
Take care, Jane x