Hi abs. Sorry to hear about your phobia surfacing. I've had a needle phobia myself, so I know what it's like. It is best to discuss it with your consultant, as she can help. Perhaps you would benefit from some sort of talking therapy, to help you deal with whatever it is in your past that triggered it? And there are also practical things re the injections you could try - using syringes (smaller, less intimidating, complete control) or some people here have suggested using children's pens, as they are smaller.
I was hospitalised 3 times while I had the phobia, which wasn't great. But as it was decades ago, I don't seem to have done any lasting damage.
So please make a start on tackling your phobia now, and let us know how your appointment goes.