As you note at the end of your post, there are a lot of different emotions associated with any disruption in life. When I was at the start of my breast cancer diagnostic process I went into therapy (luckily I previously had used a great one, and just went back.) A friend of mine got great support from a group led by a social work that was part of oncology at her cancer center. You could also try writing in a journal. I started keeping one at that time and still continue--even if just a one line per day. Probably different emotions are going to appear that could use some friendly attention in dealing with them. Keep in touch! I found Mayo Connect also helped a lot (which is how I got here.)