Welcome to our family of buzz users! Sinead is so right, there are folk here who truly care and bring the best of humanity to the notion of dealing with pain, and sometimes we get kinda crazy with humor, such as having a cyber BBQ impromptu to relieve the stress of dealing with pain.
As for my, I am also a Boston Sci, having received mine about a year earlier than you. The tenderness, swelling, and pain you do notice for the implant computer and battery, as Sinead wrote, will decline as you heal, and then all of a sudden, VOILA, there you will be not as sensitive to it, able to touch it and not go "oh, that is gross" and the swelling will have diminished.
You write of euphoria, and I must agree this is the state of being I recognized when during the Trial my wife asked how I felt, and I started crying because I did not feel any nerve pain. Euphoria! I like that. I feel blessed.
Thank you for venturing here V8!
Mark56