I'm a girl of 19 years, suffering from medical(blood-pain-injury-injection) phobia. I've a convulsive vasovagal syncope during which I experience difficulty in breathing which goes on increasing ...
Lie down when you are having blood drawn. This makes it almost impossible to faint.
Phobias are handled by desensitization. You will need to talk to your doc about this.
Thnx...