Hi violetdancer ,
A big Aussie welcome to Susan's family. It's good of you to drop in and say "Hi". Hope you like it here, and you stay for a while.
With respects to your questions.
1. Yes. Is often reported as a reoccurring event. As I understand it is a relationship of the Spiro (AA blockers) and the prostate. In some cases it does survive GCS, but as to whether it increases, is dependent on the individual.
2. Due to your HRT programme, it's probably heightened nerve sensitivity to the extent the nerve endings in your penis are hyper sensitive, thus causing arousal.
3. Breasts are so uniquely individual that it is very hard to say what and will happen. Growth has been reported as early as a week, through to in excess of 10 years HRT. Certainly there is a rule of thumb regarding genetics, however there are so many other contributing factors that makes it impossible to predict when and how much.
Looking forward to hearing more of your story in time to come, but in the meantime, be safe, well and happy.
Lotsa huggs
Catherine