Dear Welcome to HCM We understand your concerns I went through your details. I suggest you not to worry much. Steroid injection may not be the reason for your anxiety. Anxiety is always triggered when something anxious happen. For you, you are already having anxiety disorder. The anxiety you are feeling now is just because of the obsessive thinking related to the injection. Such a condition shall be vanishing within a day or two. Please do not worry. If you require more of my help in this aspect, Please post a direct question to me in this website. Make sure that you include every minute details possible. I shall prescribe some psychotherapy techniques which should help you cure your condition further. Hope this answers your query. Available for further clarifications. Good luck.