I pricked my finger with a needle used in an experiment dealing with multiple sclerosis, I did t inject anything I just got a little prick and it bled for about 50seconds or so and I didnt notice until it stopped bleeding and I had been continuing the experiment
Dear Friend. Hi, I am Chat Doctor, I have read your query in detail, I understand your concern. If the needle was sterile, i don't find any reason to worry. If the needle was infected or was being reused, then please give details for further help. This is my personal opinion based on details available here.  If you want to discuss your issues further, you may please ask stay Healthy. Chat Doctor, MD