Hello - sorry to hear of your diagnosis. It is never easy! It is always about taking a deep breath and trying to relax. When I was first diagnosed I was put with a Counsellor and her words were if you are starting to feel anxious pat your legs and then pat your arms and as you are doing that you are saying to yourself this is me and yes I am here and you are bringing yourself into the now.
Any tests that are recommended are vital to us as we work our way through diagnosis and treatment.
Take care and sending you a virtual hug