Hi, firstly, for every medical practitioner, its important to learn occupational
hazards on HIV not only for their safety but also to answers patients queries on HIV. In your case, the question is not clear, ideally once you prick the patient, you should discard it immediately after collecting the sample. There are less than zero chances when you would prick the patients finger and then the needle pricks you. May be your mind is playing anxiety games with you.