Don't you have anyone who can go with you??? A second person can be a great comfort. I don't have blood taken that often but when I do I take a real big breath in just before the needle goes in and exhale while the blood is being taken. That way I concentrate on my breathing and not what's going on. Be strong because if this blood test can reveal what's happening then you will be so relieved. Good luck and I'll be watching on Monday for an update.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand and strawberries in the other, body thoroughly used up, totally worn out, and screaming WOO HOO - What a Ride!
Sometimes the most real things in the world are the things we can't see
Until one has loved an animal, part of their soul remains unawakened.