Sounds like you’ve been through lots already, I’m sure it’s left its mark on your positivity at times. I didn’t have Chemo but I can tell you that my experience of the WLE and SNLB procedure was positive with very minimal pain (you’ll be given pain relief to take at home just in case). I recovered quickly, just follow the advice you are given for wound care and try to do your arm exercises and move, gentle walk as soon as you feel you can. Try to focus on it as a process as much as you can, it might feel more in perspective that way. Good Luck x