I had routine medical check last week,including blood drawing for blood test. After blood test, I found a small wound on my forearm which was bleeding! The small wound is near the wound caused by blood test. However, I didn't feel any pain except the blood drawing for blood test. So I don't know where the wound come from. I'm worried due to that it was bleeding at that time so it should be a new wound. Is it possible that someone stabbed me and injected blood to me while I had no feel? Will I get HIV due to this? Thank you very much for your help.