HI Barbara! Sorry to hear you are not feeling well. If you don't mind my asking, what is Raynaud's disease, I am not familiary with that. I do hope your test went well, and the doctor can do something to help you.
Keep up the good work on the training. I think it is a great idea to split your time between the treadmill and outdoors. Personally, I HATE the TM, I only use the TM if the weather is too bad to be outdoors.