Phobia Support Group
A phobia (from the Greek "fear"), is a strong, persistent fear of situations, objects, activities, or persons. The main symptom of this disorder is the excessive, unreasonable desire to avoid the feared subject. When the fear is beyond one's control, or if the fear is interfering with daily life, then a diagnosis under one of the anxiety disorders can be made.

You can buy some types IM or insulin syringes at the drugstore
Once you're feeling familiar with them the fear may hopefully dissipate
You can work on this in therapy as well.... xo