Forgive me but I haven't been on the site in a month so I just read this string....sounds like you had tough time with that first nurse (things like that burn my ass). I am glad you called your doctor and got a new nurse at the other clinic. One thing I have learned with having had my mom on dialysis for seven years is that you can't be afraid to speak up, so I am happy you did. And you did nothing wrong at all by calling your doctor..it is your health afterall.
It sounds like your boyfriend is very supportive so you are very lucky. Don't worry about the catheter either. After a little getting used to, he'll barely notice it. Besides, you'll have a halter to keep it in so it really isn't so bad. My mom was on a cycler and I will tell you that they are not loud so unfortunately it won't drown out your neighbor's motorcycle
Just one piece of advice about using the cycler...it is not difficult to use, but take your time when you hook up to it, wash thoroughly, wear your mask, etc and you will not have any problem. You're gonna be fine!!