Whatever the diagnosis, you are certainly in great distress. As you’ve already discovered, avoiding the issue is only making it worse. Since you do have family, is there anyone you trust enough to help you? Often someone who is afraid on their own can lean on a trusted family member or friend. The support person can make the phone call and accompany you to your appointments and wait for you until your appointment is over.
You might also find it helpful to read a couple of books about anxiety disorders. “Feeling Good: The New Mood Therapy” by David Burns and “The Anxiety and Phobia Workbook” by Edmund Bourne are two that have helped many of my clients. You might also benefit by joining one of the forums here on PsychCentral.
Please take some steps to help yourself. This isn’t going to get better on its own. You deserve to have a less stressed life.
I wish you well.